methyl (2R,2'S,3a'S,5''R,6'S,7a'R)-5''-methyl-4''-oxodecahydrodispiro[oxirane-2,3'-benzofuran-2',2''-pyran]-6'-carboxylate

2-(trimethylsilyl)ethyl (2R,2'S,3a'S,4''R,5''R,6'S,7a'R)-4''-hydroxy-5''-methyldecahydrodispiro[oxirane-2,3'-benzofuran-2',2''-pyran]-6'-carboxylate

methyl (2S,2'R,3a'R,4''R,5''S,6'R,7a'S)-5''-methyl-4''-((3,3,3-trifluoro-2-methoxy-2-phenylpropanoyl)oxy)decahydrodispiro[oxirane-2,3'-benzofuran-2',2''-pyran]-6'-carboxylate

rac-methyl (2R,2'S,3a'S,5''R,6'S,7a'R)-5''-methyl-4''-oxodecahydrodispiro[oxirane-2,3'-benzofuran-2',2''-pyran]-6'-carboxylate