中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
维A酸 | all-trans-retinoic-acid | 302-79-4 | C20H28O2 | 300.441 |
维生素A | RETINOL | 68-26-8 | C20H30O | 286.458 |
1-(2-羟基-3,4-二甲基苯基)乙酮 | retinoyl chloride | 53839-60-4 | C20H27ClO | 318.887 |
The absolute configuration of spiroxin A has been determined by exciton-coupled circular dichroism (CD). Namely, the difference CD between spiroxin A bis-methoxycinnamate, as well as that between spiroxin A bis-retinoate, both exhibit negative exciton couplings between the acylated phenolic hydroxyl group chromophores. This establishes the absolute configuration as 2S,3R,4S,2'S,3'R,4'S.Key words: circular dichroism, exciton coupling, spiroxins, antitumor, antifungal.