作者:Osamu Shirota、Jennifer M. Oribello、Setsuko Sekita、Motoyoshi Satake
DOI:10.1021/np100646n
日期:2011.3.25
Five new guaiane sesquiterpenes, blumeaenes E1 (1), E2 (2), K (3), L (4), and M (5), and one new eudesmane sesquiterpene, samboginone (6), along with three known compounds, cryptomeridiol, 3,3′,5,7-tetrahydroxy-4′-methoxyflavanone, and austroinulin, were isolated from the leaves of the Philippine medicinal herb sambong, Blumea balsamifera. The absolute configuration of the new guaiane core was determined
五种新的愈创树倍半萜烯,lum烯E1(1),E2(2),K(3),L(4)和M(5),以及一种新的杜仲倍半萜烯,三宝酮(6),以及三种已知的化合物隐隐美二醇从菲律宾药材三宝(Blumea balsamifera)的叶子中分离出3,3',5,7-四羟基-4'-甲氧基黄烷酮和奥古斯特林。通过采用改进的Mosher方法,确定了新愈创树核的绝对构型为1 S,7 S,9 S,10 R。在1的结构中,使用(R)-PGME作为手性各向异性助剂,环氧环烷酸部分的绝对构型被鉴定为2 S,3S。