Studies toward the Synthesis of an Oxazole-Based Analog of (−)-Zampanolide
作者:Christian P. Bold、Cindy Klaus、Bernhard Pfeiffer、Jasmine Schürmann、Rafael Lombardi、Daniel Lucena-Agell、J. Fernando Díaz、Karl-Heinz Altmann
DOI:10.1021/acs.orglett.1c00378
日期:2021.3.19
Studies are described toward the synthesis of an oxazole-based analog of (−)-zampanolide (2). Construction of (−)-dactylolide analog 22 was achieved via alcohol 5 and acid 4 through esterification and Horner–Wadsworth–Emmons (HWE)-based macrocyclization; however, attempts to attach (Z,E)-sorbamide to 22 proved unsuccessful. The C(8)–C(9) double bond of the macrocycle was prone to migration into conjugation
Enantioselective Total Synthesis of (−)-Zampanolide, a Potent Microtubule-Stabilizing Agent
作者:Arun K. Ghosh、Xu Cheng
DOI:10.1021/ol201626h
日期:2011.8.5
An enantioselectivetotalsynthesis of zampanolide has been accomplished using a novel DDQ/Brønsted acid promoted cyclization as the key reaction. The synthesis features cross-metathesis to construct the trisubstituted olefin and a ring-closing metathesis to form the macrolactone. The final N-acyl aminal formation was stereoselectively accomplished by an organocatalytic reaction.