rac-(4aR,5R,5aR,8aS,8bR,9S)-2,4a,9-trimethyl-4a,5,5a,7,8,8a,8b,9-octahydro-1H,6H-5,9-ethenopentaleno[2',1':3,4]pyrazolo[1,2-a][1,2,4]triazole-1,3(2H)-dione 在
hydrolyzing agent 、 oxidizing agent 作用下,
以53%的产率得到rac-(3R,3aS,3bR,6aS,7S,7aS)-3,7a-dimethyl-3a,3b,4,5,6,6a,7,7a-octahydro-3H-3,7-ethenopentaleno[2,1-c]pyrazole