【摘要】 本文首次报道从天然植物——海岛棉籽中分离出(-)棉酚。同时发现了受试的各种棉籽所含棉酚的光学活性的规律。(1)棉籽中棉酚的两个对映体(-)棉酚和(+)棉酚一般是不等量的,故其成分应为(±)棉酚和过量的(-)棉酚或(+)棉酚;(2)同种属棉籽含有相同旋光性的过量对映体,如海岛棉籽均含有过量的(-)棉酚,多数品种所含棉酚的光学纯度为10～25%,陆地棉籽则均含有过量的(+)棉酚,其相应棉酚的光学纯度为10～20%。更多还原

【Abstract】 (-)-Gossypol was isolated from cottonseed of species Gossypium barbadense L.. This is the first report of (-)-gossypol occurring in nature. It was found that there is a correlation between Gossypium species tested and optical activity of gossypol isolated. 1. Gossypol from cottonseed generally consists of unequal parts of enantiomers. In other words, gossypol from cottonseed contains (+)-gossypol and an excess of one enantiomer. 2. Gossypol occurring in cottonseed from the same species contains the same enantiomer in excess such as, the enantiomer in excess is (-)-gossypol in cottonseed of G. barbadense and is (+)-gossypol in cottonseed of G. hirsutum. It was shown by most varieties that gossypol in cottonseed of G. barbadense had optical purities varying from 10～25% and that of G. hirsutum varying from 10～20%.更多还原