Minor Coumarins fromCalophyllum teysmannii var.inophylloide and Synthesis of Cytotoxic Calanone Derivatives
作者:Shu-Geng Cao、Xiao-Hua Wu、Keng-Yeow Sim、Benny H. K. Tan、Jagadese J. Vittal、Joan T. Pereira、Swee-Hock Goh
DOI:10.1002/hlca.19980810549
日期:——
survey for biologically active compounds from Malaysian Calophyllum species led to the findings of the four new benzoylcoumarins 1a, 2, 3, and 4a (including the unusual prenylated 6-benzoylcoumann 1a), two uncommon coumarins 5 and 6a with a pyran-4-one moiety fused at C(6) and C(7), and compounds 7a, 9, and 10, all isolated from the bark of C. teysmannii var. inophylloide. Their structures were determined
甲化学分类调查从马来西亚生物活性化合物红厚导致了四个新benzoylcoumarins的结果物种1A,2,3,和图4a(包括不寻常的异戊烯化6- benzoylcoumann 1A),两个罕见香豆素5和图6a与吡喃-4-从C.teysmannii var.C.的树皮分离的在C(6)和C(7)处融合的一个部分以及化合物7a,9和10。茶碱。通过光谱分析和化学转化确定它们的结构。X-射线晶体结构确定的2在这个类香豆素上的取代基的构象偏好提供的信息。描述了细胞毒性钙酮(7a)和一些相关香豆素的合成。