(+)-(1β,9β,16β)-20-(tert-butyldiphenylsiloxy)-1,16-dimethoxypicras-12-ene

(+)-(1β,9β)-20-(tert-butyldiphenylsiloxy)-1-methoxypicras-12-en-16-one

(+)-(1β,16β)-20-(tert-butyldiphenylsiloxy)-1,16-dimethoxypicras-9(11)-en-12-one

rac-N'-((3R,3aS,3a1S,5S,6aR,7aS,8R,11R,11aS,11bR)-3a1-(((tert-butyldiphenylsilyl)oxy)methyl)-5,11-dimethoxy-3,8,11a-trimethyltetradecahydrodibenzo[de,g]chromen-2(1H)-ylidene)-4-methylbenzenesulfonohydrazide