Isolation and Structural Modification of 7-Deoxynarciclasine and 7-Deoxy-<i>trans</i>-Dihydronarciclasine<sup>,1</sup>
作者:George R. Pettit、Stephen A. Eastham、Noeleen Melody、Brian Orr、Delbert L. Herald、Jane McGregor、John C. Knight、Dennis L. Doubek、George R. Pettit、Lynnette C. Garner、Joy A. Bell
DOI:10.1021/np058068l
日期:2006.1.1
relationship studies of pancratistatin (1), various techniques were first evaluated for separating the mixtures of 7-deoxynarciclasine (2b) and 7-deoxy-trans-dihydronarciclasine (3a) isolated from Hymenocallis littoralis. An efficient solution for that otherwise difficult separation then allowed the lactam carbonyl group of protected (4c and 5c) alcohols 2b and 3a to be reduced employing lithiumaluminum hydride