Synthesis of the calothrixins, pentacyclic indolo[3,2-j]phenanthridine alkaloids, using a biomimetic approach
作者:Christopher S.P. McErlean、Jonathan Sperry、Alexander J. Blake、Christopher J. Moody
DOI:10.1016/j.tet.2007.08.057
日期:2007.11
Oxidation of the indolo[2,3-a]carbazole 16, readily obtained in six steps from indigo, followed by deprotection results in formation of the indolo[3,2-j]phenanthridine quinone alkaloid calothrixin B 2, demonstrating the viability of the proposed biosynthetic route to this unique ring system.
靛蓝[2,3- a ]咔唑16的氧化反应可从靛蓝中分六步轻松获得,然后脱保护,形成吲哚[3,2- j ]菲啶醌生物碱花青素B 2,证明了其活力。提出了生物合成途径,以这种独特的环系统。