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The paper reports the formation and crystal structure of dihydronitidine, expounds thereasons and conditions of easily formed oxynitidine, and discusses anticancer mechanism ofnitidine (cation). The crystallographic parameters of dihydronitidine are: space group P2_(1/n),a= 12.54(1), b = 9. 148(5), c = 14.748(8)A, β= 92. 12(6)°,Z =4. 4108 independent reflec-tions were collected within the range of 3°≤2θ≤54°, of which 2137 intensity data with I≥3σ(I) were used in the structural determination. The crystal structure has been refined byfull matrix least-square method to a final R of 0.050. 相似文献
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两面针抗肿瘤有效成分的研究 总被引:24,自引:0,他引:24
自两面针根中共分离出七种生物碱,其中六种生物碱经鉴定分别为氯化两面针碱(1)、氧化两面针碱(2)、二氢两面针碱(3)、6-甲氧基-5,6-二氢白屈菜红碱(4)、α-别隐品碱(5)和茵芋碱(6),7的结构尚待进一步研究。动物试验结果表明,1和4能延长小鼠艾氏腹水癌的生命;2、3、5和6则无明显活性。1已在临床试用,初步观察,对慢性粒细胞型白血病有近期疗效。 相似文献
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