(5S,6S,9R)-6-Benzyloxymethyl-9-(1-benzyloxy-1-methyl-ethyl)-4,6-dimethyl-1-oxa-spiro[4.5]dec-3-en-2-one

2-(3a,5a-二甲基-6,7,8,9-四氢-5H-呋喃并[2,3-i][2]苯并呋喃-8-基)丙-2-醇

乙酸酐

(3R,4R,5R)-1,4:3,5-diepoxy-1,2-secoeudesmane-2,11-diol

(S)-2-((2R,2aR,4aS,7R,8aR)-2-(hydroxymethyl)-2a,4a-dimethyloctahydrooxeto[3,2-c]isobenzofuran-7-yl)propanoic acid