Baker’s yeast-mediated enantioselective synthesis of the bisabolane sesquiterpenes (+)-curcuphenol, (+)-xanthorrhizol, (−)-curcuquinone and (+)-curcuhydroquinone
作者:Claudio Fuganti、Stefano Serra
DOI:10.1039/b006141g
日期:——
yields and shows complete enantioselectivity in the formation of the (S)-(+) isomers. Enantiopure 6a–c are versatile chiral building blocks for the synthesis of bisabolane sesquiterpenes. Their usefulness is shown in the preparation of (S)-(+)-curcuphenol, (S)-(+)-xanthorrhizol, (S)-(−)-curcuquinone and (S)-(+)-curcuhydroquinone.
Total synthesis of HM-1 and HM-2, aromatic sesquiterpenes isolated from the phytopathogenic fungus Helicobasidium mompa. Structure revision of HM-2
作者:A. Srikrishna、P.C. Ravikumar
DOI:10.1016/j.tetlet.2005.06.156
日期:2005.9
The structure assigned to the sesquiterpene HM-2 was found to be incorrect by total synthesis. A ring-closing metathesis based strategy was developed for the total synthesis of the aromatic sesquiterpene HM-1, which on functional group transformation established the structure of HM-2 as 23, a cuparene derivative.
The first total synthesis of (+/-)-lagopodin A and a formal total synthesis of enokipodins A and B is described. The requisite precursors containing two vicinal quaternary carbon atoms were assembled employing Claisen rearrangement and an RCM reaction as key steps starting from 2,5-dimethoxy-4-methylacetophenone. (c) 2006 Elsevier Ltd. All rights reserved.
Srikrishna; Rao, M. Srinivasa, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2010, vol. 49, # 10, p. 1363 - 1371