The Favorskii-type Rearrangement of 3-Bromo-β-ionone with Sodium Ethoxide
作者:Masato Nanasawa、Hiroyoshi Kamogawa
DOI:10.1246/bcsj.55.3655
日期:1982.11
The reaction of 3-bromo-β-ionone with sodium ethoxide afforded ethyl 4-(2,6,6-trimethyl-2-cyclohexenylidene)butyrate by a Favorskii-typerearrangement, accompanied by double-bond migration, while with sodium phenoxide or diethyl amine, substitution products were primarily obtained.
New hindered isomers of 3-dehydroretinal (vitamin A2)
作者:Rong-Liang Chen、Robert S.H. Liu
DOI:10.1016/0040-4020(96)00355-9
日期:1996.6
preparation of six newisomers (7-cis, 7,9-dicis, 7,11-dicis, 7,13-dicis, 7,9,11-tricis and 7,9,13-tricis) of 3-dehydroretinal (1, vitaminA2), and their spectroscopic properties are reported. Because of the unexpected 1,7-H migration in photo-sensitized isomerization of the smaller building blocks in the dehydro-series, the introduction of the 7-cis geometry in the synthesis of newhinderedisomers of 3-dehydroretinal
Model compounds for the study of spectroscopic properties of visual pigments and bacteriorhodopsin
作者:Timor Baasov、Mordechai Sheves
DOI:10.1021/ja00311a050
日期:1985.12
Synthesis of biotinylated retinoids for cross-linking and isolation of retinol binding proteins
作者:Nasri Nesnas、Robert R Rando、Koji Nakanishi
DOI:10.1016/s0040-4020(02)00667-1
日期:2002.8
The synthesis of (3R)-3-[Boc-Lys(biotinyl)-O]-11-cis-retinol bromoacetate and 3-[Boc-Lys(biotinyl)-0]-all trans-retinol chloroacetate is described. These biotinylated retinoids a-re instrumental in labeling the retinol binding proteins (RBPs) via a nucleophilic displacement of the haloacetate by a residue in the binding site of the protein. The covalently linked biotin will allow for a facile isolation and purification of the protein on a streptavidin column thus rendering the protein ready for a tryptic digest followed by mass spectrometric analysis. The 11-cis retinoid was synthesized via metal reduction of an alkyne intermediate generated from a Homer-Wadsworth-Emmons (HWE) reaction whereas the all-trans was synthesized via two consecutive HWE couplings. (C) 2002 Elsevier Science Ltd. All rights reserved.
Libsu, Solomon; Singh, Anil K, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2007, vol. 46, # 8, p. 1297 - 1302