Transformation of Phthalideisoquinoline Alkaloid to Benzo [c] phenanthridine Alkaloid
1972 年 20 巻 7 号 p. 1484-1487
詳細
1972 年 20 巻 7 号 p. 1484-1487
l-α-Narcotine is easily converted into dihydroprotoberberine methiodide. The Hofmann degradation of this methiodide gives methine base which is transformed to benzo [c] phenanthridine derivative by photocyclization and dehydrogenation.
