作者:M.P. Cava、P. Stern、K. Wakisaka
DOI:10.1016/s0040-4020(01)93344-7
日期:1973.1
An improved non-oxidative photochemical synthesis of aporphine derivatives has been developed, in which o-halobenzylidenetetrahydroisoquinolines are irradiated in the presence of potassium t-butoxide. The yield (72%) of one such product, N-carbethoxynorneolitsine (25) is the highest ever reported for any cyclization producing the aporphine ring system. Compound 25 was converted in two steps to cassameridine
已经开发了一种改进的非氧化光化学合成阿芬啡衍生物的方法,其中在叔丁醇钾的存在下辐照邻卤代亚苄基四氢异喹啉。对于生产环磷酰胺的任何环化反应,一种此类产品N- carbethoxynorneolitsine(25)的收率(72%)是有史以来最高的。将化合物25分两步转化为卡沙美定(4),从而确认了该氧杂卟啉的建议结构。还使用改进的光化学方法合成了天然碱dehydrodicentrine(26)和dicentrine(3)。