Synthesis of 11Z-8,18-Propano- and Methano-Retinals and Their Interaction with Bovine Opsin.
作者:Akimori WADA、Masako TSUTSUMI、Yuka INATOMI、Hiroo IMAI、Yoshinori SHICHIDA、Masayoshi ITO
DOI:10.1248/cpb.43.1419
日期:——
In order to clarify the conformation of chromophore in rhodopsin, especially the torsional angle around the C6-C7 single bond, 8, 18-propano- and methano-retinals were prepared from 2, 2-dimethylcyclohexanone via the palladium-catalyzed coupling reaction of vinyl triflates with methyl E-3-trimethylstannyl-2-butenoate, and their interaction with bovine opsin was investigated.
Mousseron-Canet; Mousseron, Bulletin de la Societe Chimique de France, 1956, p. 391,395
作者:Mousseron-Canet、Mousseron
DOI:——
日期:——
An Improved Synthesis of Benzocycloalkanone Derivatives
作者:Akimori Wada、Kyoko Sawada、Naomi Ono、Masayoshi Ito
DOI:10.1248/cpb.52.132
日期:——
A convenient and improved annulation method for the synthesis of bicyclic ketones was developed. A 2,2-dimethyl-6-(2-phenylsulfonyl)ethylcyclohexanone was converted into a sulfonylester by the addition of ethyl acetate and subsequent dehydration. A Dieckmann type condensation of the sulfonylester followed by desulfonylation afforded the 8,8-dimethyl-1,2,3,4,5,6,7,8-octahydronaphthalene-2-one in good
Retinoids and related compounds. Part 26. Synthesis of (11Z)-8,18-propano- and methano-retinals and conformational study of the rhodopsin chromophore†
作者:Akimori Wada、Masako Tsutsumi、Yuka Inatomi、Hiroo Imai、Yoshinori Shichida、Masayoshi Ito
DOI:10.1039/b104394n
日期:——
In order to clarify the conformation of the chromophore in rhodopsin, especially the effect of the torsional angle around the C6–C7 single bond on the CD spectrum, 8,18-propano- and methano-retinal 4 and 5 were prepared via the palladium-catalyzed coupling reaction of vinyl triflates derived from bicyclic ketones 10 and 27 with methyl (E)-3-(trimethylstannyl)but-2-enoate. In a binding experiment with bovine opsin, retinal analogs 4 and 5 afforded the new rhodopsin analogs. Although the opsin shifts of these pigments were similar to that of the native rhodopsin, CD spectra exhibited the characteristic feature owing to the locked structures of retinal
analogs. This fact strongly indicates that the CD spectra were significantly influenced by the torsional angles around the 6–7 and 8–9 single bonds of the chromophore in the protein.