Benzyl-[2-(4-ethyl-4-hydroxy-3,13-dioxo-3,4,12,13-tetrahydro-1H-2-oxa-6,12a-diaza-dibenzo[b,h]fluoren-11-yl)-ethyl]-carbamic acid benzyl ester 在
palladium on activated charcoal
氢气 作用下,
以
溶剂黄146 为溶剂,
以63%的产率得到11-(2-Benzylamino-ethyl)-4-ethyl-4-hydroxy-1,12-dihydro-4H-2-oxa-6,12a-diaza-dibenzo[b,h]fluorene-3,13-dione