Cyanomidines. I. Synthesis and Vasodilatory Activity of N-Substituted Heteroaromatic Cyanoamidines.
摘要:
各种异芳香氰基脲被合成,起始材料为腈,经过氰基咪唑或从酰胺经过硫酰胺。对这些化合物进行了抑制实验,以测试它们对40 mM K+诱导的大鼠主动脉条收缩的影响,同时还评估了选定化合物对去甲肾上腺素诱导的收缩的拮抗作用。大多数氰基脲表现出血管扩张活性。还对强效血管活性化合物进行了86Rb+外流的刺激实验,以确定它们的钾通道开放作用。N-氰基-N'-(2-硝氧基乙基)-3-吡啶羧基脲(3h)显示出最大的效力。3h的甲烷磺酸盐,命名为KRN2391,被选中进一步开发作为抗心绞痛药物。
Various heteroaromatic cyanoamidines were synthesized starting from nitriles via cyanoimidates or from amides via thioamides. The compounds were tested for inhibitory effect on the 40 mM K+-induced contraction of rat aorta strips and selected compounds were also evaluated for antagonism of the norepinephrine-induced contraction. Most of the cyanoamidines showed vasodilatory activities. Potent vasoactive compounds were also examined for stimulation of the 86Rb+ efflux to determine their potassium channel opening actions. Maximum potency was displayed by N-cyano-N'-(2-nitroxyethyl)-3-pyridinecarboxyamidine (3h). The methanesulfonate of 3h, which was designated as KRN2391, has been selected for further development as an antianginal agent.
各种异芳香氰基脲被合成,起始材料为腈,经过氰基咪唑或从酰胺经过硫酰胺。对这些化合物进行了抑制实验,以测试它们对40 mM K+诱导的大鼠主动脉条收缩的影响,同时还评估了选定化合物对去甲肾上腺素诱导的收缩的拮抗作用。大多数氰基脲表现出血管扩张活性。还对强效血管活性化合物进行了86Rb+外流的刺激实验,以确定它们的钾通道开放作用。N-氰基-N'-(2-硝氧基乙基)-3-吡啶羧基脲(3h)显示出最大的效力。3h的甲烷磺酸盐,命名为KRN2391,被选中进一步开发作为抗心绞痛药物。