(1R*,10bR*)-1,2,3,3a,4,5,6,6a-octahydro-1,5,5-trimethyl-3-propionyl-3,3a,5a-triazapentaleno[3a,3-a]inden-2,6(3H,5aH)-dione 在
丙酸酐 作用下,
反应 8.0h,
以42%的产率得到(3,8,8-Trimethyl-10-oxo-5,6,9-triazatricyclo[9.4.0.02,6]pentadeca-1(15),2,4,11,13-pentaen-4-yl) propanoate