已经描述了通过合成方法测定rengyol(1)的立体结构的方法,rengyol(1)是从连翘中分离得到的一种新型非芳族苯乙醛类天然产物。4-乙酰氧基环己酮与溴代乙酸乙酯的Reformatsky反应提供了两种异构体的乙酰氧基酯(5,6),以及一种通过IAH还原生成的具有赤道乙酰氧基的基团(5)的三醇被鉴定为rengyol(1)。类似地从另一种异构体乙酰氧基酯(6)获得的异构体(7)也已从天然来源中分离出来,并被命名为异戊二醇。进一步地,将酯类(5,6)脱水,然后进行热解脱乙酰氧基化,得到1,3-环己二烯衍生物(12),将其在光敏的顺式-二加氧作用下还原,得到苯二酚(1),其立体结构确定为1, 4-顺-环己二醇体系。1 H和13 C NMR光谱数据。
1,3-Diol Synthesis via Controlled, Radical-Mediated C−H Functionalization
作者:Ke Chen、Jeremy M. Richter、Phil S. Baran
DOI:10.1021/ja802491q
日期:2008.6.1
The invention of a method for the synthesis of 1,3-diols from the corresponding alcohols is described, via controlled, radical-mediated C-H functionalization. The sequence described herein entails near quantitative conversion to the corresponding trifluoroethyl carbamate, followed by a variant of the Hofmann-Löffler-Freytag reaction, cyclization, and hydrolysis to provide the 1,3-diols. In addition
[EN] 1,3-DIOL SYNTHESIS VIA CONTROLLED, RADICAL-MEDIATED C-H FUNCTIONALIZATION<br/>[FR] SYNTHÈSE DE 1,3-DIOL PAR FONCTIONNALISATION CONTRÔLÉE DE C-H AVEC RADICAUX
申请人:SCRIPPS RESEARCH INST
公开号:WO2009137691A3
公开(公告)日:2009-12-23
Chemoenzymatic synthesis of rengyoside -A, -B, isorengyoside and synthesis of their aglycones
作者:Annunziata Soriente、Anna Della Rocca、Guido Sodano、Antonio Trincone
DOI:10.1016/s0040-4020(97)00138-5
日期:1997.3
The chemoenzymatic synthesis of a group of naturally occurring cyclohexylethanoids, rengyoside-A, -B and isorengyoside, has been performed by enzymatic glucosidation of their chemically synthesized aglycones, rengyol, rengyoxide and isorengyol. (C) 1997 Published by Elsevier Science Ltd.
Photochemical synthesis of halleridone, hallerone, rengyol and derivatives
作者:Jose L. Breton、Laura D. Llera、Eduardo Navarro、Juan Trujillo
DOI:10.1016/s0040-4020(01)90321-7
日期:1987.1
Chemo enzymatic synthesis of Rengyol and Isorengyol
作者:Christoph Kobler、Franz Effenberger
DOI:10.1016/j.tet.2006.03.012
日期:2006.5
Cyanohydrins 2 of O-protected 4-hydroxycyclohexanones 1 are excellent starting compounds for the synthesis of Isorengyol (I) and Rengyol (II). The cyano group of the O-benzyl derivative 2d is first converted into the corresponding aldehyde 4, which via Wittig olefination led to the vinyl Compound 6. Hydroboration of the trans-derivative (trans-6) leads, after debenzylation, to Isorengyol, whereas hydroboration and debenzylation of the cis-isomer (cis-6) gives Rengyol. With hydroxynitrile lyases (HNLs) as catalysts the stereoselective preparation of cis- as well as trans-cyanohydrin 2d is possible, which enables the selective preparation of Isorengyol or Rengyol, respectively. The trans-con figuration of Isorengyol and the cis-configuration of Rengyol were secured by X-ray crystal structure analysis. (c) 2006 Elsevier Ltd. All rights reserved.