中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
N-苄氧羰基-L-脯氨酸 | N-Benzyloxycarbonyl-L-proline | 1148-11-4 | C13H15NO4 | 249.266 |
合成了七种新的黄体生成素释放激素(LHRH)类似物,具有Azagly10基团,以及三种相应的Gly10类似物,用于生物测定和抑制效能比较。本研究旨在探讨Azagly10基团可能具有的最小化C-末端降解的优势。在研究实现Azagly10-肽的三个方法中,氰酸根离子与肼酰胺的反应最为有利。还研究了位置1的取代变化。抗排卵测定的数据表明,Azagly10基团可能不会抑制活性,并且可能允许与Gly10基团相等甚至更高的活性,具体取决于类似物。 [N-Ac-D-Thr1,D-p-Cl-Phe2,D-Trp3,6,Azagly10]-LHRH比相应的Gly10类似物更具抑制作用。基于一对对类似物,出现了以下关系:(1)N-Ac-D-Thr1比N-Ac-p-Cl-Phe1更有效;(2)作为N-Ac-Ala1的L-构型比D-构型更有效;(3)N-Ac-Ala1似乎比N-Ac-D-Thr1更有效;(4)D-Trp6比D-Phe6更有效。在使用LHRH拮抗剂阻止排卵的最终临床应用中,Azagly10基团可能具有限制酶降解的优势。
Seven new analogs of the luteinizing hormone releasing hormone (LHRH), having an Azagly10 moiety, and three corresponding Gly10 -analogs were synthesized for bioassay and comparison of inhibitory potencies. This study was toward a possible advantage of the Azagly10 moiety to minimize C-terminal degradation, in vivo. Of the three procedures which were studied to achieve Azagly10-peptides, the reaction of cyanate ion with hydrazides was the most favorable. Variations of substitution in position 1 were also studied. The data from the antiovulatory assay showed that an Azagly10 moiety may not depress activity, and may allow equal or even higher activity than the Gly10 moiety, depending on the analog. [N-Ac-D-Thr1 , D-p-Cl-Phe2 , D-Trp3,6, Azagly10]-LHRH was more inhibitory than the corresponding Gly10-analog. Based on pairs of analogs, the following relationships appeared: (1) N-Ac-D-Thr1 was more effective than
N-Ac-p-Cl-Phe1 ; (2) The L-configuration of Ala as N-Ac-Ala1- was more effective than the D-; (3) N-Ac-Ala1 appeared more effective than the N-Ac-D-Thr1 ; (4) D-Trp6 appeared more effective than D-Phe6. In an ultimate clinical use of an antagonist of LHRH to block ovulation, the Azagly10 moiety may be advantageous for limitation of enzymatic degradation.
合成了七种新的黄体生成素释放激素(LHRH)类似物,具有Azagly10基团,以及三种相应的Gly10类似物,用于生物测定和抑制效能比较。本研究旨在探讨Azagly10基团可能具有的最小化C-末端降解的优势。在研究实现Azagly10-肽的三个方法中,氰酸根离子与肼酰胺的反应最为有利。还研究了位置1的取代变化。抗排卵测定的数据表明,Azagly10基团可能不会抑制活性,并且可能允许与Gly10基团相等甚至更高的活性,具体取决于类似物。 [N-Ac-D-Thr1,D-p-Cl-Phe2,D-Trp3,6,Azagly10]-LHRH比相应的Gly10类似物更具抑制作用。基于一对对类似物,出现了以下关系:(1)N-Ac-D-Thr1比N-Ac-p-Cl-Phe1更有效;(2)作为N-Ac-Ala1的L-构型比D-构型更有效;(3)N-Ac-Ala1似乎比N-Ac-D-Thr1更有效;(4)D-Trp6比D-Phe6更有效。在使用LHRH拮抗剂阻止排卵的最终临床应用中,Azagly10基团可能具有限制酶降解的优势。