作者:Alejandro F. Barrero、Juan F. Sánchez、José Molina、Antonio Barrón、M del Mar Salas
DOI:10.1016/0031-9422(90)85279-o
日期:1990.1
Abstract Five new guaianolides, in addition to four known guaianolides, have been isolated from extracts of the flowers of Tanacetum annuum . Structures and stereochemistries were elucidated from spectral data and chemically confirmed by correlations with α-santonin and mutual interconversions. Conformational and configurational analysis performed through the molecular mechanics calculations corroborate
摘要 除了四种已知的愈创木酚内酯外,还从紫荆花的提取物中分离出了五种新的愈创木酚内酯。从光谱数据中阐明了结构和立体化学,并通过与 α-santonin 的相关性和相互转化进行了化学确认。通过分子力学计算进行的构象和构型分析证实了通过 JH 、H 值和 NOEDIF 实验获得的那些。获得了脱水内酯可能是人工制品的证据。