Baker’s yeast mediated enantioselective synthesis of the bisabolane sesquiterpenes curcumene, turmerone, dehydrocurcumene and nuciferal
作者:Claudio Fuganti、Stefano Serra、Andrea Dulio
DOI:10.1039/a808772e
日期:——
yeast converts the allylic alcohol 6 into enantiomerically pure (S)-(+)-3-(p-tolyl)butan-1-ol 7 which is a useful chiral building block for the synthesis of bisabolane sesquiterpenes. The versatility of this approach is shown in the preparation of (S)-(+)-curcumene, (S)-(+)-turmerone, (S)-(+)-dehydrocurcumene and (E,S)-(+)-nuciferal.
Enantioselective synthesis of (R)- and (S)-curcumene and curcuphenol: an efficient chemoenzymatic route
作者:Ahmed Kamal、M. Shaheer Malik、Ahmad Ali Shaik、Shaik Azeeza
DOI:10.1016/j.tetasy.2007.10.019
日期:2007.10
An efficient enantioselective synthesis of curcumene and curcuphenol is described. The key intermediates, substituted butanoates 7a and 7b and their acids 8a and 8b are obtained in high enantiopurity (>99% eel by a lipase-catalyzed kinetic resolution process. The enantiopure intermediates thus obtained were utilized for the total synthesis of the target compounds. (c) 2007 Elsevier Ltd. All rights reserved.