Cyclombandakamines A<sub>1</sub>and A<sub>2</sub>, Oxygen-Bridged Naphthylisoquinoline Dimers from a Congolese<i>Ancistrocladus</i>Liana
作者:Blaise Kimbadi Lombe、Torsten Bruhn、Doris Feineis、Virima Mudogo、Reto Brun、Gerhard Bringmann
DOI:10.1021/acs.orglett.7b00209
日期:2017.3.17
Cyclombandakamines A1 (1) and A2 (2), both with an unprecedented pyrane–cyclohexenone–dihydrofuran sequence and six stereocenters and two chiral axes, are the first oxygen-bridged dimeric naphthylisoquinoline alkaloids. They were isolated from the leaves of an as yet unidentified Congolese Ancistrocladus species. Their stereostructures were established by spectroscopic, chemical, and chiroptical methods
Cyclombandakamines A 1(1)和A 2(2)都是氧桥联的二聚萘基异喹啉生物碱,它们具有前所未有的吡喃-环己烯酮-二氢呋喃序列,并具有六个立体中心和两个手性轴。它们是从尚未鉴定的刚果Ancistrocladus物种的叶子中分离出来的。它们的立体结构是通过光谱,化学和按摩方法结合DFT和TDDFT计算而建立的。它们显然源自“开链”萘基异喹啉二聚体的一系列氧化环化反应,并表现出显着的抗原生动物活性。