(+)-(1β,11α,12α,16β)-20-(tert-butyldiphenylsiloxy)-12-(acetyloxy)-16-methoxypicrasane-1,11-diol

(+)-(1β,16β)-20-(tert-butyldiphenylsiloxy)-1-(acetyloxy)-16-methoxypicras-11-ene

(+)-(12α,16β)-20-(tert-butyldiphenylsiloxy)-12-hydroxy-16-methoxypicrasane-1,11-dione

(+)-(1β,12α)-20-(tert-butyldiphenylsiloxy)-1,12-dihydroxypicras-3-ene-2,11,16-trione

Acetic acid (2R,3R,3aS,5S,6aR,7aS,8R,11aS,11bS,11cS)-11c-(tert-butyl-diphenyl-silanyloxymethyl)-5-methoxy-3,8,11a-trimethyl-1,11-dioxo-hexadecahydro-6-oxa-benzo[de]anthracen-2-yl ester