A series of 2-amino-7, 8-dihydro-4-piperazinyl- and 4-amino-7, 8-dihydro-2-piperazinyl-6H-thiopyrano[3, 2-d]pyrimidines and related compounds were synthesized and evaluated for hypoglycemic activity. Several compounds exhibited excellent activity, and 7, 8-dihydro-2-(4-methyl-piperazinyl)-4-(1-pyrrolidinyl)- (8c, dimaleate : MTP-1307) and 2-amino-7, 8-dihydro-4-piperazinyl-6H-thiopyrano[3, 2-d]pyrimidine (18a, dimaleate : MTP-1403) were selected for further investigation.Oral administration of 8c and 18a at 50 mg/kg markedly improved oral glucose tolerance in ob/ob mice. In this test, buformin also showed activity, whereas tolbutamide produced no significant improvement.
合成了一系列2-
氨基-7, 8-二氢-4-
哌嗪基和4-
氨基-7, 8-二氢-2-
哌嗪基-6H-噻
吡喃[3, 2-d]
嘧啶及相关化合物,并评估了它们的降糖活性。 Several compounds exhibited excellent activity, and 7, 8-dihydro-2-(4-methyl-piperazinyl)-4-(1-pyrrolidinyl)- (8c, dimaleate:
MTP-1307) 和 2-amino-7, 8-dihydro-4-piperazinyl-6H-thiopyrano[3, 2-d]pyrimidine (18a, dimaleate:
MTP-1403) 被选为进一步研究的对象。在对 ob/ob 小鼠进行50 mg/kg的口服给药实验中,8c和18a显著改善了
口服葡萄糖耐受性。在该实验中,布
氟胺也显示出活性,而托
吡胺并未产生显著改善。