Asymmetric dihydroxylation of geranyl, neryl and trans, trans-farnesyl acetates
摘要:
The asymmetric dihydroxylation of geranyl acetate, neryl acetate and trans, trans -farnesyl acetate was studied using the new Sharpless' ligands (DHQD)2-PHAL and (DHQ)2-PHAL. High enantioselectivity was always observed. High positional selectivity for the 6,7-olefin was observed in the case of the monoterpene acetates.
Enantioselective Total Synthesis of the Potent Anti-inflammatory (+)-Myrrhanol A
作者:Victoriano Domingo、Lúcia Silva、Horacio R. Diéguez、Jesús F. Arteaga、José F. Quílez del Moral、Alejandro F. Barrero
DOI:10.1021/jo901011m
日期:2009.8.21
The first totalsynthesis of potentanti-inflammatory polypodanes (+)-myrrhanol A (1), (+)-myrrhanone A (2), (+)-myrrhanone B (3), and (+)-myrrhanol B (4) has been achieved. Key steps in our convergent, highly stereocontrolled route are a Ti(III)-mediated radical cyclization of a chiral monoepoxide to furnish a bicyclic synthon that combines stereospecifically with an acyclic vinyl iodide via an intermolecular
A Short Enantioselective Total Synthesis of Dammarenediol II
作者:E. J. Corey、Shouzhong Lin
DOI:10.1021/ja9620806
日期:1996.1.1
Enantioselective synthesis of 3(S)-hydroxy polygodial derivatives and evaluation of their vanilloid activity
作者:Mariantonietta D’Acunto、Carmela Della Monica、Irene Izzo、Luciano De Petrocellis、Vincenzo di Marzo、Aldo Spinella
DOI:10.1016/j.tet.2010.11.002
日期:2010.12
The enantioselective synthesis of 3(S)-hydroxy polygodial and its acetyl derivative is described. The construction of the 3-hydroxy drimane skeleton was based on the titanium-catalyzed radical cyclization of (10S)-10, 11-epoxy-farnesyl acetate. Only underivatized 3(S)-hydroxy polygodial showed activity in assays on VR1 vanilloid receptor in HEK cells transfected with the human VR1. (C) 2010 Elsevier Ltd. All rights reserved.