An enantiospecific approach to thapsanes from R-carvone: synthesis of (−)-thaps-8-en-5-ol
摘要:
The first enantiospecific synthesis of a thapsane, containing three contiguous quaternary carbon atoms, is accomplished starting from R-carvone. An intramolecular alkylation and an intramolecular diazoketone cyclopropanation reaction were employed for the stereo- and regiospecific generation of three contiguous quaternary carbon atoms present in the thapsane framework. (C) 2000 Published by Elsevier Science Ltd.
An enantiospecific approach to thapsanes from R-carvone: synthesis of (−)-thaps-8-en-5-ol
摘要:
The first enantiospecific synthesis of a thapsane, containing three contiguous quaternary carbon atoms, is accomplished starting from R-carvone. An intramolecular alkylation and an intramolecular diazoketone cyclopropanation reaction were employed for the stereo- and regiospecific generation of three contiguous quaternary carbon atoms present in the thapsane framework. (C) 2000 Published by Elsevier Science Ltd.