二碳酸二叔丁酯 、
3-[2-((1S,4aR,8aR)-1-Methyl-3,6-dioxo-hexahydro-pyrano[3,4-c]pyridin-7-yl)-ethyl]-indole-1-carboxylic acid tert-butyl ester 生成 (7aR,8S,11aR,12aS)-8-Methyl-10-oxo-4a,5,7a,8,10,11,11a,12,12a,13a-decahydro-6H,7H-9-oxa-6a,13-diaza-indeno[2,1-a]anthracene-13-carboxylic acid tert-butyl ester