A detailed account is given of the chiral synthesis of tri-O-methylimbricatine (3), the tri-O-methyl derivative of the structurally unique benzyltetrahydroisoquinoline alkaloid imbricatine (2) isolated from the starfish Dermasterias imbricata. The route begins with the asymmetric synthesis of the sulfur-containing d-phenylalanine derivative and includes its conversion into the cis-benzyltetrahydroisoquinoline
的详细说明中给出的三-手性合成的ø -methylimbricatine(3),所述三ø -
甲基衍
生物的结构独特的benzyltetrahydroisoquinoline
生物碱imbricatine(的2从海星隔离)Dermasterias玳瑁。该路线从含
硫的d-
苯丙
氨酸衍
生物的不对称合成开始,包括将其转化为顺式-
苄基四氢异喹啉部分26a具有
硫醇基和5-芳
硫基-3-
甲基-1-组
氨酸部分的结构。作为本合成的结果,已明确地证实了用于伊布卡汀的结构和绝对构型的正确性。