configurationally stable P-diol 10a or, optionally, the M-product 10b. From the axially chiral phenylisoquinolines thus obtained atropo-diastereodivergently, the authentic natural naphthylisoquinolines with the respective axial configurations, korupensamines A (1a) and B (1b), were obtained by completion of the second naphthalene ring, starting from the previous "bridgehead" C1 unit.
描述了通过“内酯法”的应用,抗疟疾中的
甲氨蝶呤胺A(1a)和B(1b)的立体选择性全合成。首次对5,8'-偶联的
萘基
异喹啉生物碱进行阻转性选择的关键步骤是酯8的区域选择性分子内偶联,以得到结构不稳定的内酯桥联的联芳基9及其对阻转异构体的选择性裂解,具有多种手性和非手性H -亲核试剂,产生构型稳定的P
-二醇10a或任选的M产物10b。从由此获得的轴向手性苯基
异喹啉,通过对位-非对映异构,通过完成第二个
萘环获得了具有各自轴向构型的天然天然
萘基
异喹啉,即甲
氨苯胺A(1a)和B(1b),从先前的“