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1 ission in aggregates of astaxanthin, a small polyene.
2 atalyst resulted in the formation of soluble polyenes.
3 and tandem oxidation reactions of conjugated polyenes.
4 rnation resulting from Peierls distortion in polyenes.
5 re compared to these data for cyclacenes and polyenes.
6 r systems such as donor-acceptor-substituted polyenes.
7 electrophilic addition to aromatic rings and polyenes.
8 e pigments belong to xanthomonadin-like aryl polyenes.
9 cess attractive for the synthesis of complex polyenes.
12 Diphenylamine (DPA), a known inhibitor of polyene and isoprene biosynthesis, is shown to inhibit f
15 ization reactions incorporated the sensitive polyene and provided the protected roxaticin seco-acid,
21 icacy of other classes of drugs, such as the polyenes and echinocandins, was not affected by the pres
23 ave smaller band gaps than the corresponding polyenes and triplet ground states for nine or more benz
25 uce toxicity (e.g. new lipid formulations of polyenes), and new derivatives of drugs have been develo
26 ille cross-coupling reaction to assemble the polyene, and an intramolecular Horner-Wadsworth-Emmons o
27 ly for the analogues of this state in longer polyenes, and consequently studies of longer polyenes ar
29 ng domain of Ncr1p conferred temperature and polyene antibiotic sensitivity without changes in sterol
30 Nystatin isolated from Streptomyces is a polyene antibiotic that is frequently used in the treatm
31 led with the fluorescent cholesterol-binding polyene antibiotic, filipin, although there are differen
36 new method for studying the interactions of polyene antibiotics with sterol-containing membranes, an
37 teins is a general mode of action of all the polyene antibiotics, of which some have been shown addit
39 ction of a cholesterol-binding compound, the polyene antifungal antibiotic amphotericin B methyl este
46 nt relationship to a third subfamily of aryl polyene BGCs, and together the three subfamilies represe
47 tive to its Huckel isomer is confined to the polyene bridge and is not due to a delocalized pi circui
48 on of uncorrected ISE(II) values of just the polyene bridge portion of 1 and its Huckel counterpart s
49 eous in vitro production of three octaketide polyenes by biosynthetic enzymes for the 10-membered ene
51 egio- and stereocontrolled catalytic radical polyene cascade cyclization from preoleanatetraene oxide
52 ared to their neutral forms as, for example, polyene cations and dyes such as indigo and the cyanines
55 inding pocket are straightening of retinal's polyene chain and separation of its beta-ionone ring fro
58 steric interactions between Ala-117 and the polyene chain at the C13 position, torsion of the polyen
59 thermal reactions in which relaxation of the polyene chain back to all-trans is coupled to various ch
60 ate NMR, we were able to analyze the retinal polyene chain between positions C10 and C15 as well as t
61 yl Batho, even though the C8-hydrogen of the polyene chain cannot interact with a ring C5-methyl grou
62 s double bonds and s-cis single bonds in the polyene chain determine the topology space of the carote
63 ne chain at the C13 position, torsion of the polyene chain due to steric constraints in the binding p
65 e orientation of the beta-ionone ring to the polyene chain has both modest barrier heights and a tors
68 orientation of the beta-ionone ring and the polyene chain of the chromophore 11-Z-retinylidene of rh
71 data indicate that the methyl groups on the polyene chain point toward the cytoplasmic side of the m
72 cient steric bulk at the terminal end of the polyene chain to mimic the trimethylcyclohexenyl ring of
73 pward movement of the C(5)-C(13) part of the polyene chain toward the cytoplasmic surface or with inc
74 ature of the analogues and the length of the polyene chain with all-trans-C17 aldehyde and all-trans-
75 olves a shift of electron density within the polyene chain, and it does not involve participation of
76 ined rotation about each bond in the retinal polyene chain, for both the protonated and deprotonated
77 beta-ionone ring can rotate relative to the polyene chain, thereby populating both positively and ne
78 ence of an electron-withdrawing group on the polyene chain, which would inhibit carbocation formation
89 proximity and favorable geometry for the two polyene chains, but from the heptahelical crystallograph
91 85 as a photochemical reaction pathway for a polyene chromophore imbedded in a protein binding cavity
92 nt reaction pathway for a diene, or a longer polyene confined in a rigid (relative to isomerization r
94 Bronsted acid (chiral LBA) mediated cationic polyene cyclization and a titanocene-mediated radical cy
95 erated in 12 steps underwent a nonbiomimetic polyene cyclization mediated by ferric chloride to gener
96 nd 1,1,1,3,3,3-hexafluoro-2-propanol (HFIP), polyene cyclizations using allylic alcohols as initiator
97 rpene synthesis, particularly in the area of polyene cyclizations, much remains to be learned if the
98 many reagent combinations that can initiate polyene cyclizations, simple electrophilic halogen sourc
101 itions agrees with theoretical treatments of polyene excited-state energies and is consistent with th
103 cell surface Y2 sites could be activated by polyene filipin III through complexing of membrane chole
105 Several methods for the generation of the polyene fragment were explored, and the side-chain was u
107 periments imply that the S1 states of longer polyenes have local energy minima, corresponding to a ra
108 resistance to the azoles, echinocandins, and polyenes have occurred in several Candida species, most
110 ty can be used to furnish complex dienes and polyenes in good yields and excellent selectivities (gen
111 n = 2, in marked contrast to other known D-A polyenes in which beta(0) increases steadily with n.
112 0.89, 0.81.0.89; p<0.0001) with ratio of PI (polyene index) to PRs - suggesting the plausible signifi
113 Charge is moved from the allenic side of the polyene into the furanic ring region and is accompanied
114 highly substituted and stereodefined skipped polyenes is described from the reductive cross-coupling
115 The finding that fluorescence from linear polyenes is so strongly dependent on molecular symmetry
117 the Proteobacteria; their products are aryl polyenes, lipids with an aryl head group conjugated to a
119 of a new class of bis-salicylate-containing polyene macrodiolides, which have potent antibiotic acti
120 ritical for the structure elucidation of the polyene macrolactam salinilactam A, but its structural a
123 n (NYT), an antifungal drug of the family of polyene macrolide antibiotics, elevated YFP expression b
125 ents the most concise preparation of any oxo-polyene macrolide reported to date, is achieved in the a
126 discovered selvamicin, an unusual antifungal polyene macrolide, in bacterial isolates from two neighb
133 A series of cyclobutanes substituted 1,2- by polyenes of increasing radical-stabilizing power has bee
135 dy nonlinear photoexcitation dynamics in the polyene oligomers by using a quantum-chemical method sui
136 cal bond between the protein and the retinal polyene only slightly affected the main electron transpo
140 mands a re-evaluation of current theories of polyene photophysics and highlights the robustness of ca
141 the first example of Type II PKS-synthesized polyene pigments and show that the metabolites serve as
146 r can provide access to other members of the polyene-polyol macrolides, including stereoisomers of RK
148 s constructed from four principal modules: a polyene precursor for carbons 3-9, and three alkyne-term
149 ules (tricyclic to pentacyclic) from achiral polyene precursors by enantioselective proton-initiated
153 The results indicate that both ends of the polyene reversal agent are involved in Pgp interaction a
155 ring the energy change for hydrogen loss for polyene series 2 (n double bonds) with polyene series 3
156 s for polyene series 2 (n double bonds) with polyene series 3 (n double bonds), which are combined in
158 (2)H NMR structure shows a reduction of the polyene strain, while torsional twisting of the beta-ion
159 esymmetrization of readily available achiral polyene substrates, 5,6-, 5,7-, and 5,8-bicyclic amides
164 triphosphate (ATP), and we detected the same polyene tetramate as that in Streptomyces transformed wi
166 mical methods for the preparation of skipped polyenes that contain varied stereochemistries and subst
168 lective access to a diverse array of skipped polyenes through a process that establishes one C-C bond
172 de adenine dinucleotide phosphate (NADPH), a polyene was detected in the tryptic acyl carrier protein
174 cture, and excited-state properties of model polyenes, we propose a molecular mechanism that accounts
175 erved for cis/trans isomerization in acyclic polyenes, which occurs via singlet diradical transition
176 gy is applicable to the synthesis of 1,5,9,n-polyenes with any possible double bond configuration acc
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