(R)-6-{(1E,3Z,7E,9E)-(5R,11S)-11-Hydroxy-11-[(2R,4S,5R,6R)-4-hydroxy-5-methyl-6-((E)-propenyl)-tetrahydro-pyran-2-yl]-3,5,7-trimethyl-undeca-1,3,7,9-tetraenyl}-5,6-dihydro-pyran-2-one 在
manganese(IV) oxide 、 sodium tetrahydroborate 作用下,
生成 (R)-6-{(1E,3Z,7E,9E)-(5R,11R)-11-Hydroxy-11-[(2R,4S,5R,6R)-4-hydroxy-5-methyl-6-((E)-propenyl)-tetrahydro-pyran-2-yl]-3,5,7-trimethyl-undeca-1,3,7,9-tetraenyl}-5,6-dihydro-pyran-2-one