主权项 |
1. A mixture of compounds of Formula I and Formula II: wherein R is selected from the group consisting of CH(CH3)(OH), CH(CH2CH3)(OH), CH(CHCH2)(OH), CH(CH(CH3)2)(OH), CH(CH3)(OC(O)CH3), CH(CH2CH3)(OC(O)CH3), CH(CHCH2)(OC(O)CH3), CH(CH(CH3)2)(OC(O)CH3), C(O)CH3, C(O)CH2CH3, C(O)CHCH2, C(O)(CH(CH3)2), CHNOH, CHC((CH3)(CHO)), CHC((CH3)(CH2OH)), CHCHCH2CHCHCH2CH, CH2OCH2CHCH2, CH2OCH2C((CH2)(CH3)), CH2OCH2CH2CH2CHO, CH2OCH2CH2CH2CH2OH, CH2OCH((CH3)(OCH2CH3)), CH2OCOCH(CH3)2, CH2OCOOCH3, and CH2OCOOCH2CH3, and stereoisomers thereof. |