The structure of neolitsine (I) has been confirmed by synthesis of the racemic compound, prepared from benzylisoquinoline derivatives by a photolytic ring closure.
通过合成由苄基异喹啉衍生物通过光解闭环制得的外消旋化合物,证实了新litsine(I)的结构。
An improved photochemical aporphine synthesis
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