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氨基酸及其衍生物在止血/抗凝活性方面有一定的应用.以L-苯丙氨酸为起始原料,经磺化引入磺酸基,再与甲醇、乙醇、丙醇、异丙醇和正丁醇脱水酯化,一锅法合成了6种未见报道的L-苯丙氨酸的磺酸酯类衍生物(L1~L6),以期获得具有的较强血液生理活性的潜在药物.实验中采用了质谱、核磁共振进行结构表征.该合成方法产率高(78% ~ 95%),后处理简单,不失为合成该类衍生物的好方法.衍生物的凝血四项实验表明:抗促凝效果是内源性和外源性凝血途径共同作用的结果.血浆复钙实验表明:衍生物均具有一定的抗凝活性,其抗凝效果随浓度变化而变化,但是随R链的长度增加,抗凝效果并未见规律性.衍生物的抗凝活性主要受磺酸基及酯基的影响,因此在设计合成抗血栓化合物时可以考虑引入磺酸基及酯类基团.

参考文献

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