ライフサイエンスコーパス: Boc

1 Boc amino acids and carboxylic acids were coupled on fun

2 Boc in situ neutralization protocols are used in combina

3 Boc, Fzd8, Mbip, and Zswim5 are apparently expressed in

4 Boc-protected amines can be transformed into nonsymmetri

5 Boc=tert-butoxycarbonyl, LG=leaving group, PMB=para-meth

6 selective route to both enantiomers of cis-1-Boc-3-fluoropiperidin-4-ol, a highly prized building blo

7 allylamine to tricarbonyl(tropone)iron; (2) Boc-protection of the resulting secondary amine; and (3)

8 as Fmoc-protected derivatives Fmoc-m-Abc(2K(Boc))-OH (1a) and Fmoc-o-Abc(2K(Boc))-OH (1b).

9 moc-m-Abc(2K(Boc))-OH (1a) and Fmoc-o-Abc(2K(Boc))-OH (1b).

10 sed alone or in conjunction with Fmoc-Abc(2K(Boc))-OH (1c) as ordinary amino acids in Fmoc-based soli

11 The CF(3)Boc-group that caps the P3 amino moiety was discovered t

12 Cholecystokinin-1 receptor agonist A-71623 [Boc-Trp-Lys(epsilon-N-2-methylphenylaminocarbonyl)-Asp-(

13 Demomedin C resulted by coupling a Boc-protected N(4)-chelator to neuromedin C (human GRP(1

14 xidation-cyclization-oxidation reaction of a Boc-protected amino alcohol, prepared from 3-butynol, wh

15 intermediate 10, which was condensed with a Boc-protected adenine, followed by deprotection, furnish

16 Aldehyde 13 was protected as the N(a)-Boc aldehyde 32 and then converted into the prochiral C(

17 rganic azides containing free alcohol, acid, Boc-protected amine, ester, protected sugars, long-chain

18 In addition, Boc deletion in a Gas1 null background partially amelior

19 up strategy for linear PAAs to an Fmoc/Alloc/Boc strategy.

20 t are consistent with those between N(alpha)-Boc-protected amino acids and single nucleotides rigorou

21 Reactions between the reactive N(alpha)-Boc-protected amino acids and the trinucleotides d(T(1)B

22 he beta-amino group in the assembly of 3 and Boc-MOM protection of the alpha-amino group in the synth

23 filopodia of responding cells bear Cdon and Boc: coreceptors in the Shh pathway.

24 rsen following combined deletion of Gas1 and Boc Together, these data indicate that BOC acts as a mul

25 Gas1 and Boc/Cdon act as co-receptors in the vertebrate Hedgehog

26 ol, cyclohexanol, 4-methylumbelliferone, and Boc-Tyr-OMe), an amine (propargylamine, diethylamine, mo

27 logy includes dipeptides Boc-Tyr-Gly-OEt and Boc-Tyr-Phe-Me and provides a pathway for understanding

28 vage of the N-O bond of the oxazepinones and Boc-deprotection provided 2-substituted 2,3-dihydropyrid

29 ing Shh into the developing VTC and Zic2 and Boc into the central retina indicate that Boc expression

30 Several membrane-embedded proteins such as Boc, Cdo, and Gas1 bind Shh and promote signaling.

31 ble with common N-protecting groups, such as Boc, Fmoc, Cbz, and benzyl, as well as various OH protec

32 diate (S)-35 from the commercially available Boc-amino acid 65.

33 Sulfoximines bearing Boc and Cbz groups are stable to further cross coupling

34 f three chiral N(alpha)-substituted, N(beta)-Boc protected alpha-hydrazinoacetamide model compounds c

35 The bis-Boc analog 14 proved useful in peptide chemistry and was

36 N'-bis-(phenylsulfonyl)-, and (2S)-N,N'-bis-(Boc)-3-(2-pyrrolyl)alanines (10, 3, and 14, respectively

37 microcapsules with shell walls bearing both Boc and Fmoc triggering groups.

38 ino acid side-chain-protecting groups, t-Bu, Boc, Trt, and Pbf, and the formation of aspartimide as a

39 hat the rotation of the tert-butoxycarbonyl (Boc) group is slower in a 2-lithiated pyrrolidine than a

40 use of readily cleaved tert-butoxycarbonyl (Boc) or carboxybenzyl (Cbz) imine protecting groups adds

41 cting groups, such as tert-butyloxycarbonyl (Boc), carbobenzyloxy (Cbz), and 9-fluorenylmethyloxycarb

42 esults confirmed that tert-butyloxycarbonyl (Boc), tert-butyl ((t)Bu), and 2,2,4,6,7-pentamethyldihyd

43 indole position of N-tert-butyloxycarbonyl (Boc)-protected (S)-tryptophan ethyl ester is reported.

44 d to the discovery of tert-butyloxycarbonyl (Boc)-protected indole-2-carboxyesters as suitable motifs

45 ynthesis (SPPS) using tert-butyloxycarbonyl (Boc)/benzyl (Bzl) chemistry is an indispensable techniqu

46 s such as acetates (Ac, Piv) and carbamates (Boc, Fmoc), respectively.

47 moieties, azetidines, tert-butyl carbamates (Boc-group), cyclobutanes, and spirocycles.

48 monstrate that N-acyl-tert-butyl-carbamates (Boc) and N-acyl-tosylamides (Ts), two classes of acyclic

49 The transmembrane protein Brother of Cdo (Boc) has been implicated in Shh-mediated commissural axo

50 eurons and the Shh receptor, Brother of CDO (Boc), is expressed in local and callosal projection neur

51 and active fragments of heparin, Ihog, Cdo, Boc, Hedgehog-interacting protein (Hhip), Patched (Ptc),

52 ne derivative with a fluorescent side-chain, Boc-Arg(Nap)-OH, was prepared by palladium(0)-catalyzed

53 ystallographic analysis of the corresponding Boc-protected ethyl ester and Cbz-protected ethyl ester,

54 s of the CXCR3 inhibitor starts from (+)-(D)-Boc alanine and 2-chloronicotinic acid and utilizes a Go

55 The thermal de-Boc conditions were found to be compatible with a large

56 c alpha/alpha-pseudodipeptide, depsipeptide (Boc-Leu-Lac-OEt).

57 he alkynyl-imides (ynimides) generate N,N-di-Boc imide-functionalized triazole and isoxazole heterocy

58 ethyleneimides with easily removable N,N-di-Boc-carbamate protecting groups, allowing for a flexible

59 he developed methodology includes dipeptides Boc-Tyr-Gly-OEt and Boc-Tyr-Phe-Me and provides a pathwa

60 ing group that has found use for (S)U during Boc-based oligomerization is also suitable for Fmoc-base

61 Here, we show that the uml locus encodes Boc and that Boc function is cell-autonomously required

62 nt (VTC) of the retina, specifically express Boc, a cell adhesion molecule that acts as a high-affini

63 In this protocol, picolinamides were first Boc activated into tertiary N-Boc-N-substituted picolina

64 Five Boc-protected aminooxy and N-alkylaminooxy amines have b

65 l protection schemes (up to five from: Fmoc, Boc Alloc, pNZ, o-NBS, and Troc), together with the righ

66 4-hydroxyproline were synthesized (as Fmoc-, Boc-, and free amino acids) in 2-5 steps.

67 locks for solid-phase synthesis bearing Fmoc/Boc and Fmoc/Alloc protecting groups expanding recently

68 otecting groups expanding recently used Fmoc/Boc protecting group strategy for linear PAAs to an Fmoc

69 ttle is known about in vivo requirements for Boc during vertebrate embryogenesis.

70 This study reveals a role for Boc in ventral CNS cells that receive high levels of Hh

71 Hh and uncovers previously unknown roles for Boc in vertebrate embryogenesis.

72 y of functional groups can be attached, from Boc-protected amines to fluoroalkanes.

73 beta-Ketosulfonamides derived from Boc or Cbz-protected amino acids bearing hydrophobic sid

74 repared via an optimized route starting from Boc-dopamine, with paraformaldehyde afforded demethyldeo

75 Starting from Boc-protected tryptamine and (S)-tetrahydro-5-oxo-2-fura

76 Conversely, the loss of functional Boc leads to a reduction in the strength of synaptic con

77 rtius rearrangement in boiling tBuOH to give Boc-protected alpha-aminopyrroles in high yield.

78 la)2-(R)-Aic(NN)-Ala-OMe and the hexapeptide Boc-[Ala-(R)-Aic(NN)-Ala]2-OMe as well.

79 In Boc(-/-) mutant mice, the ipsilateral projection is sign

80 In Boc(-/-) VTC, the number of Zic2-positive RGCs is reduce

81 sal lateral geniculate nucleus is altered in Boc(-/-) mice.

82 ation mass spectrometry indicates that NH2-K(Boc)LVFF-CONH2 forms a significant population of oligome

83 In contrast, NH2-K(Boc)LVFF-CONH2 undergoes hydrophobic collapse at a low c

84 (R)-enantiomers of tricladins A and B from l-Boc alanine was achieved.

85 The technology uses a modified Boc SPPS strategy that avoids the use of anhydrous HF.

86 N-Boc (S)-proline was converted into (2S)-2-[(phenylselany

87 N-Boc alpha-amino nitriles were deprotonated and alkylated

88 N-Boc amides displayed higher reactivity than Weinreb amid

89 N-Boc substitution on the diene precursor changes the site

90 N-Boc- and N-ethoxycarbonyl-4-pyridones and the resulting

91 (18)F-FLT was synthesized from the 3-N-Boc-1-[5-O-(4,4'-dimethoxytrityl)-3-O-nosyl-2-deoxy-beta

92 of diastereomeric (3RS,4RS)- and (3RS,4SR)-N-Boc-3-amino-2-methyldec-5-yn-4-ol (syn-3f and anti-3f, r

93 react with N-Boc 2-lithiopyrrolidine (5a), N-Boc N-methylaminomethyllithium (5b), or 2-lithio-1,3-dit

94 an intramolecular cyclization process of a N-Boc-protected piperidine sulfone.

95 by in situ deprotection of O-Ts activated N-Boc hydroxylamines.

96 a minimally protected vancomycin aglycon (N-Boc-vancomycin aglycon) and provides a direct method for

97 A variety of aryl and aliphatic N-Boc-aldimines are effective substrates for this transfor

98 mines from previously unreported C-alkynyl N-Boc-N,O-acetals, with alpha-substituted beta-keto esters

99 sing copper-catalyzed amidation of 3-amino-N-Boc-4-chloropyridine.

100 intramolecular reductive cyclization of an N-Boc aniline onto the oxindole moiety to form a pentacycl

101 ed with phenyl migration in the case of an N-Boc-2-phenylacrylamide to generate a 5-acetoxy-5-benzylo

102 (e.g., an aryl iodide, a thiophene, and an N-Boc-indole) are compatible with the mild reaction condit

103 c activity from [(18)F]fluoride ion and an N-Boc-protected (phenyl)aryliodonium salt precursor (15).

104 seful chiral building block, from N-Bn and N-Boc 9-azabicyclo[3.3.1]nonane-2,6-diols 2a and 2b was ac

105 groups such as THP, MOMO, N(3), OTBS, and N-Boc are tolerated.

106 ariety of N-acetyl, N-methoxycarbonyl, and N-Boc beta,beta-diaryldehydroamino acids, containing a div

107 wed by a fragmentation, aromatization, and N-Boc deprotection cascade.

108 Similarly, N-Ts and N-Boc groups were compatible with reaction conditions, whe

109 h-type reaction between various ynones and N-Boc imines, whose stereocontrol presumably derives from

110 ls, ketones, amides, carboxylic acids, and N-Boc protected amines tethered to their 4-position afford

111 the phenolic hydroxyl in beta-tyrosine and N-Boc protection in lysine.

112 s with a Cu(I)- (i)PrpyboxdiPh complex and N-Boc-(l)-proline has been accomplished.

113 of N-Boc-2-lithio-2-phenylpyrrolidine and N-Boc-2-lithio-2-phenylpiperidine have been studied in the

114 yrrolidine (N-Boc-2-lithiopyrrolidine) and N-Boc-2-lithiopiperidine, formed by deprotonation of N-Boc

115 nnich reactions between glycine imines and N-Boc-aldimines with high levels of enantio- and diastereo

116 gically relevant N-Boc-isostatine (2b) and N-Boc-dolaisoleucine (3c).

117 by deprotonation of N-Boc-pyrrolidine and N-Boc-piperidine, respectively.

118 rated beta-hydroxyesters to establish anti,N-Boc-alpha-hydrazino-beta-hydroxyesters.

119 erted to desirable building blocks such as N-Boc-amines and the parent chiral formamide compounds.

120 n-alkoxycarbonylation of readily available N-Boc-1-amino-3-yn-2-ols.

121 substituted isatins with readily available N-Boc-protected aminoacids followed by an intramolecular a

122 catalyzed carboamination reactions between N-Boc-O-(but-3-enyl)hydroxylamine derivatives and aryl or

123 The effectiveness of utilizing N-Bn-N-Boc-alpha-amino aldehydes in cross-benzoin reactions wit

124 y the gram-scale synthesis of C7-boronated N-Boc-L-tryptophan methyl ester and the rapid synthesis of

125 nsamidation of N-tert-butoxycarbonylation (N-Boc) activated secondary amides that proceeds under exce

126 reaction of in situ generated challenging N-Boc C-alkynyl imines from previously unreported C-alkyny

127 e reaction of sulfenate anions with chiral N-Boc-protected beta-substituted beta-amino iodides was ev

128 Under the same conditions, N-Boc-2-alkynyl-1-amino-3-yn-2-ols were converted into the

129 tterionic compounds from the corresponding N-Boc derivatives has been developed.

130 he in situ generation of the corresponding N-Boc imines and the asymmetric Mannich reaction with exce

131 inyl)ketimines derived from cyclohexanone, N-Boc-piperidin-4-one, and tetrahydropyran-4-one in high y

132 ates at the benzylic position and dimethyl N-Boc alpha-aminophosphonates at the CH3O group to induce

133 However, s-BuLi converted the dimethyl N-Boc-phosphoramidate derived from 1-phenylethylamine to t

134 LiTMP metalated dimethyl N-Boc-phosphoramidates derived from 1-phenylethylamine and

135 which the diazo carbon was disubstituted, N-Boc imines react with both alpha-diazo esters and alpha-

136 A first generation synthesis that employed N-Boc-homopiperazine was improved in a second generation a

137 rimethyl-10-phenyldecadenoic acid (enantio-N-Boc-ADDA) is reported.

138 lithiation-substitution of enantioenriched N-Boc-2-phenylpyrrolidine or -piperidine (prepared by asym

139 In diethyl ether, N-Boc-2-lithio-2-arylpiperidines have been found to be con

140 For N-Boc-2-phenylpyrrolidine and -piperidine, the barriers to

141 idines, can be prepared in four steps from N-Boc beta-lactams.

142 A synthesis of 3,3-diarylazetidines from N-Boc-3-aryl-3-azetidinols using Friedel-Crafts arylation

143 reomeric dipeptide derivatives formed from N-Boc-L-phenylalanine.

144 ynthesis of (+)-saxitoxin in 14 steps from N-Boc-l-serine methyl ester.

145 l auxiliary is prepared in four steps from N-Boc-L-tyrosine on a multigram scale in high yield and at

146 important family of target molecules) from N-Boc-pyrrolidine, a commercially available precursor.

147 on of an alpha-methylbenzyl-functionalized N-Boc piperazine using s-BuLi/(-)-sparteine or (+)-spartei

148 vered a wide range of alpha-functionalized N-Boc piperazines.

149 es followed by alcohol oxidation furnished N-Boc O-TBS-protected beta-aminoynones.

150 oisomeric lactones through hydrogenolysis, N-Boc protection, reduction, methanolysis, and acetate pro

151 Starting from inexpensive N-Boc-O-Bn-L-aspartic acid, gram quantities of L-Aha hydro

152 Interestingly, N-Boc-2-alkynyl-1-amino-3-yn-2-ols 6, bearing an additiona

153 ichiometric dynamic resolution of 2-lithio-N-Boc-piperidine (7) have been investigated.

154 c dynamic resolution (CDR) of rac-2-lithio-N-Boc-piperidine using chiral ligand 8 or its diastereomer

155 N-tert-butoxycarbonyl-2-lithiopyrrolidine (N-Boc-2-lithiopyrrolidine) and N-Boc-2-lithiopiperidine, f

156 Notably, N-Boc-protected amino acids were successfully coupled in g

157 as well as decarboxylative vinylations of N-Boc alpha-amino acids, proceed in high yield and with ex

158 convergent and demonstrates the utility of N-Boc alpha-amino nitriles as linchpins for alkaloid synth

159 Reductive lithiation of N-Boc alpha-amino nitriles generated alpha-amino alkyllith

160 Conversion of a wide range of N-Boc amides to aryl ketones was achieved with Grignard re

161 A new series of N-Boc ketimines derived from pyrazolin-5-ones have been us

162 he selective alpha- and beta- arylation of N-Boc piperazines via lithiation/Negishi coupling is repor

163 res for the racemic lithiation/trapping of N-Boc piperazines.

164 lding asymmetric deprotonation trapping of N-Boc piperidine is successfully realized using s-BuLi and

165 Both enantiomers of N-Boc protected diol 2b were converted into the correspond

166 11-mediated enantioselective lithiation of N-Boc pyrrolidine (6), followed by reaction of the chiral

167 oselective Pd-catalyzed alpha-arylation of N-Boc pyrrolidine has been carried out.

168 The protocol involves deprotonation of N-Boc pyrrolidine using s-BuLi/(-)-sparteine in TBME or Et

169 outes; and examples of alpha-vinylation of N-Boc pyrrolidine using vinyl bromides exemplified by the

170 tonation reactions (lithiation-trapping of N-Boc pyrrolidine, an O-alkyl carbamate, and a phosphine b

171 n the ruthenium-catalyzed cycloaddition of N-Boc ynamides with azides has been developed to give a pr

172 The convergent synthesis of N-Boc-(2R,3R,8R,9R,4E,6E)-3-amino-9-methoxy-2,6,8-trimethy

173 In the case of N-Boc-1-amino-3-yn-2-ols 3, bearing alkyl or aryl substitu

174 Lithiation of N-Boc-1-phenyltetrahydroisoquinolines was optimized by in

175 The enantiomerization dynamics of N-Boc-2-lithio-2-phenylpyrrolidine and N-Boc-2-lithio-2-ph

176 tion in the presence of a chiral ligand of N-Boc-2-lithiopiperidine followed by the zinc/copper chemi

177 yields for the lithiation-substitution of N-Boc-2-phenylpyrrolidine at -78 degrees C can be ascribed

178 The first features addition of N-Boc-3-bromoindole 26 to the sulfinamide 25, providing a

179 A metal-free oxidative cyclization of N-Boc-acrylamides with (diacetoxyiodo)benzene in acetic ac

180 metalation of the SAMP/RAMP hydrazones of N-Boc-azetidin-3-one, reaction with a wide range of electr

181 single-crystal X-ray structure analysis of N-Boc-CbBI (13) revealed their structural origins.

182 The remarkable stability of N-Boc-CbBI (which is stable even at pH 1) relative to N-Bo

183 g Pd-catalyzed carboamination reactions of N-Boc-O-(but-3-enyl)hydroxylamines is significantly higher

184 tion step is mediated by the activation of N-Boc-protected 2-aminopyridine-containing amides by trifl

185 The reactivity of N-Boc-protected 2-benzyl-2-aminoethyl iodide was found to

186 The gold(I)-catalyzed cyclization of N-Boc-protected 6-alkynyl-3,4-dihydro-2H-pyridines, prepar

187 atom transfer (HAT) from the C-H bonds of N-Boc-protected amino acids to the cumyloxyl radical (CumO

188 The scope of Pd-catalyzed synthesis of N-Boc-protected anilines from aryl bromides and commercial

189 ther the (3R,2S) and (3S,2R) enantiomer of N-Boc-protected sphingosine analogues has been synthesized

190 tivity by sparteine-mediated lithiation of N-Boc-pyrrolidine and addition to silyl fluoride electroph

191 thiopiperidine, formed by deprotonation of N-Boc-pyrrolidine and N-Boc-piperidine, respectively.

192 Asymmetric deprotonation of N-Boc-pyrrolidine or dynamic resolution in the presence of

193 In this paper, N-Boc and N-Cbz protected alpha-branched amines are synthe

194 In particular, N-Boc analogue 8 was obtained in a single step.

195 Deprotection of the poly(N-Boc-morpholin-2-one) yields a water-soluble, cationic po

196 The synthesis of the enantiomerically pure N-Boc 9-azabicyclo[3.3.1]nonane-2,6-dione (4b), a potentia

197 carbon center (C8), and an azide reduction/N-Boc-lactam-opening cascade leading to the northern amina

198 facile synthesis of biologically relevant N-Boc-isostatine (2b) and N-Boc-dolaisoleucine (3c).

199 Reduction of the resulting N-Boc amino alcohols furnished hygrolines and pseudohygrol

200 2]octane (DABO, 1) and its two selectively N-Boc monoprotected derivatives 15 and 16 is described.

201 he synthesis of oxazolidinones from simple N-Boc amines is reported.

202 clization, hydroxyl group-assisted in situ N-Boc-deprotection, selective deoxygenation of the xanthat

203 ing the southern aminal, a stereoselective N-Boc-lactam enolate C-allylation to introduce the second

204 A method to prepare 1-substituted N-Boc-tetrahydro-beta-carbolines was developed by lithiati

205 des were first Boc activated into tertiary N-Boc-N-substituted picolinamides.

206 ate derived from 1-phenylethylamine to the N-Boc alpha-aminophosphonate preferentially.

207 exist between the electrophilicity of the N-Boc carbonyl group and the reaction rate.

208 During preparation of the N-Boc compounds from trifluoroacetamides, a competing intr

209 highly diastereoselective synthesis of the N-Boc derivative of (2S,3S)-3-hydroxypipecolic acid.

210 duction, and an orthogonal cleavage of the N-Boc protecting group in piperidone derivatives was carri

211 amino acid started with the removal of the N-Boc protective group under acidic or neutral conditions

212 Our approach was based on the N-Boc-directed metalation of enantiopure 4-piperidone (-)-

213 The scope of thermolytic, N-Boc deprotection was studied on 26 compounds from the Pf

214 Thus, N-Boc anilines (I) are sequentially converted to heterocyc

215 tioselective addition of alkylazaarenes to N-Boc aldimines and nitroalkenes under mild conditions.

216 nucleophilic addition of acetylacetone to N-Boc protected aldimines Type I E and Type II E are activ

217 synthons for enantioselective additions to N-Boc-aldimines.

218 (which is stable even at pH 1) relative to N-Boc-CBI containing a cyclopropane (t(1/2) = 133 h at pH

219 An effective route to N-Boc-protected aromatic sphingosine analogues is accompli

220 Preparative scale peptide couplings of two N-Boc amino acids were achieved with this method.

221 ridin-3-ol derivatives, e.g., 43) by using N-Boc-protected piperidin-3-one (40).

222 cation reaction with EtOH to give valuable N-Boc protected amines.

223 ationally stable at -80 degrees C, whereas N-Boc-2-lithio-2-arylpyrrolidines are configurationally st

224 n occurs with complete regiocontrol, while N-Boc-alkyl ynamides yield a mixture of regioisomers.

225 boalkoxy phenols, respectively, react with N-Boc 2-lithiopyrrolidine (5a), N-Boc N-methylaminomethyll

226 nnich reaction of diazoacetate esters with N-Boc aldimines catalyzed by silver(I) triflate in the pre

227 ssful cycloaddition of the parent TMM with N-Boc imines, and has further permitted the reaction of su

228 aCl(3).2LiCl metal exchange, reaction with N-Boc pyrrolidin-3-one (5), and subsequent decarboxylative

229 n, the reaction was diastereospecific with N-Boc-2,3-dimethylacrylamides and proceeded with phenyl mi

230 nich reaction of silyl ketene acetals with N-Boc-amino sulfones has been developed.

231 When aryl or alkyl azides are reacted with N-Boc-aminopropiolates or arylynamides, the cycloaddition

232 thodology was developed and optimized with N-Boc-indole-2-boronic acid giving access to alpha-indole-

233 With N-Boc-protected 4-(allylaminomethyl)-2(5H)furanones as sta

234 nce of NaBH4 as the hydride donor to yield N-Boc-1-alkyl-THIQs (+)-10a-g in up to 97:3 er's after rem

235 cross-couplings of racemic alpha-zincated N-Boc-pyrrolidine with unactivated secondary halides, thus

236 N-(Boc)-Ynamides are converted to oxazolones via a cyclizat

237 (2S)-N-(Boc)-N'-(Phenylsulfonyl)-, (2S)-N,N'-bis-(phenylsulfonyl

238 ve Ni-mediated cyclization of an N4-aryl,N4-(Boc)cytosine intermediate as a key step.

239 rfuryl alcohol, can be transformed via its O-Boc derivative to 4-acyloxy, 4-aryloxy-, 4-amino-, or 4-

240 bonded complex with the carboxylate anion of Boc-d-proline.

241 In the case of Boc-L-Phe-L-Oxd-OBn, VCD spectra in CCl(4) and detailed

242 epared by palladium(0)-catalyzed coupling of Boc-Arg-OH with a 4-bromonaphthalimide.

243 organic dye, eosin Y, catalyzes coupling of Boc-protected potassium alpha-aminomethyltrifluoroborate

244 s multistep process involves deprotection of Boc-amino ynones and subsequent treatment with methanoli

245 Deprotection of Boc-protected products proceeded readily to provide amin

246 ion of Smo, the spatiotemporal expression of Boc and Gas1 may determine the outcome of Hedgehog signa

247 data together, we propose that expression of Boc in cells from the VTC is required to sustain Zic2 ex

248 that EP WAT is a major site of expression of Boc transcript.

249 e carbonylation reaction led to a mixture of Boc-protected and N-unsubstituted pyrrole-3-carboxylic e

250 Avoiding HF extends the scope of Boc SPPS to post-translational modifications that are co

251 The crystal structure of Boc-l-4-thiolphenylalanine tert-butyl ester revealed cry

252 hat the structural behavior of the oligomers Boc-(L-Phe-L-Oxd)(n)-OBn is similar from n = 2 to n = 6;

253 Here we focus on Boc-diphenylalanine, an archetypical example of a peptid

254 rganocatalytic Mannich reaction performed on Boc-imines of o-(azidomethyl)benzaldehydes, followed by

255 ) or modified as a free amine (GlcNH(2) ) or Boc (GlcNHBoc).

256 f aryl bromides and CH(2)=C(NHP)CO(2)Me (P = Boc or CBz) to form ArCH=C(NHP)CO(2)Me, which are then u

257 d at positions i and i+3 of the pentapeptide Boc-(R)-Aic(NN)-(Ala)2-(R)-Aic(NN)-Ala-OMe and the hexap

258 ates, based on variation of the pentapeptide Boc-l-Ala-gamma-d-Glu-l-Lys-d-Ala-d-Ala, were synthesize

259 ) protocol and Amyloid beta (39-42) peptide (Boc-Val-Val-IIe-Ala-OMe), following solution-phase strat

260 fic hetero-complexes of Ptch2/Gas1 and Ptch1/Boc mediate the process of Smo de-repression with differ

261 ( R)-Boc-2-methylproline (3a) was synthesized in good yield w

262 The product ( R)-Boc-2-methylproline (3a) was then carried forward in thr

263 The best results were obtained with ( R)-Boc-alanine, which yielded products in 27-83% yield with

264 r the secreted molecule Shh and its receptor Boc in synapse formation.

265 Selectivities that previously required Boc protection can be achieved; furthermore, the NBpin d

266 ric products can also be obtained using ( S)-Boc-alanine as a ligand.

267 ECT), such as 5-[(123)I]-A85380 (see scheme, Boc = tert-butyloxycarbonyl, cod = 1,5-cyclooctadiene, T

268 ment with AnxA1Ac2-26 plus FPR antagonists t-Boc-FLFLF (250 ng/kg) or WRW4 (FPR2/ALX selective, 1.4 m

269 Blockade of FPRs by an antagonist, Boc2 (t-Boc-Phe-d-Leu-Phe-d-Leu-Phe), abrogates CXCL2 release, w

270 ies to block the AnxA1 pathway (by using N-t-Boc-Met-Leu-Phe, a nonselective AnxA1 receptor antagonis

271 the P1 to P3 side chains and the N-terminal Boc were sequentially truncated, revealed a correlation

272 show that the uml locus encodes Boc and that Boc function is cell-autonomously required for Hh-mediat

273 , pituitary, somites and upper jaw, but that Boc might negatively regulate Hh signals in the lower ja

274 In contrast, we find that Boc deletion results in facial widening that correlates

275 nd Boc into the central retina indicate that Boc expression alone is insufficient to fully activate t

276 Our phenotypic analysis suggests that Boc is required as a positive regulator of Hh signaling

277 The Boc group can be removed on thermolysis or left intact d

278 The Boc/Bzl strategy has several advantages, including relia

279 esymmetrizing, cascade process involving the Boc protecting group.

280 coordination from the carbonyl group of the Boc group to zinc.

281 , the half-life (t(1/2)) for rotation of the Boc group was found to be approximately 10 h at -78 degr

282 -piperidine, the barriers to rotation of the Boc group were determined using density functional theor

283 ompounds 61 and 64 and, after removal of the Boc groups, the desired IBR2 analogues 15 and 16.

284 in situ IR spectroscopy and showed that the Boc group rotates slowly at low temperature.

285 , as we had previously demonstrated that the Boc-(L-Ala-D-Oxd)(n)-OBn series folds in a beta-band rib

286 Using the Boc protectng group in 18 allowed preparation of 1 in an

287 clization via transition states in which the Boc group is placed in a perpendicular orientation relat

288 lied for simultaneous deprotections with the Boc and (t)Bu groups.

289 ble oxazole-5-trifluoroacetamides into their Boc-protected 5-aminooxazole derivatives provides interm

290 nt for the direct conversion of pyridines to Boc-protected 2-aminopyridines with exquisite site selec

291 Analogously, the reagent (N,N,N')-tri-Boc 2-ethynylhydrazine serves as a beta-hydrazinoethyl a

292 in which the amino group was masked with two Boc substituents, a Cu(I) carboxylate complex and the we

293 well as cyclization of the free amine, under Boc- or ArSO- deprotection conditions have been examined

294 prohibits on-resin thioester synthesis using Boc chemistry, we devised a method for the synthesis of

295 d under simple reaction conditions utilizing Boc(2)O as the reagent at room temperature.

296 expressed in postsynaptic target cells while Boc is expressed in a complementary population of presyn

297 -H borylation is found to be compatible with Boc protecting groups.

298 is strategy also enables cross-coupling with Boc-protected aziridines.

299 f single racemic naphthylglycidyl ether with Boc-protected isoproylamine with 100% epoxide utilizatio

300 roxy group and treatment of the product with Boc anhydride provided the activated cyclic sulfamates 1