作者:Nguyen Manh Cuong、Tran Quang Hung、Tran Van Sung、Walter Chacles Taylor
DOI:10.1248/cpb.52.1175
日期:——
bisisomahanine (1), was isolated from the roots of Glycosmis stenocarpa (DRAKE) TAN., along with two known monomeric carbazole alkaloids, murrayafoline-A (2) and murrayanine (3). The planar structure of bisisomahanine was determined to be 9,9''-dihydroxy-3,3'',8,8''-tetramethyl-3,3''-bis-(4-methyl-3-pentenyl)-3,3'',11,11''-tetrahydro-10,10''-(bipyrano[3,2-a]carbazole) from the combination of spectroscopic
从甜叶甘蓝(DRAKE)TAN的根中分离出一种新的二聚吡喃咔唑生物碱双西马嘌呤(1),以及两种已知的单体咔唑生物碱,murrayafoline-A(2)和murrayananine(3)。比西马嘌呤的平面结构经测定为9,9''-二羟基-3,3'',8,8''-四甲基-3,3''-双-(4-甲基-3-戊烯基)-3光谱和化学证据的结合物中得到的,3'',11,11''-四氢-10,10''-(联吡喃并[3,2-a]咔唑)。Bisisomahanine是第一个具有1,1'型键合的二聚异戊酸酯化吡喃咔唑生物碱。NMR和CD光谱数据表明它是在手性轴上具有主要构型的非对映异构体的混合物。