Adenosine deaminase inhibitors. Synthesis and biological evaluation of (.+-.)-3,6,7,8-tetrahydro-3-[(2-hydroxyethoxy)methyl]imidazo[4,5-d][1,3]diazepin-8-ol and some selected C-5 homologs of pentostatin
作者:H. D. Hollis Showalter、Sterling R. Putt、Pal E. Borondy、Joan L. Shillis
DOI:10.1021/jm00364a022
日期:1983.10
methyl]imidazo[4,5-d][1,3]diazepin-8(3H)-one (9a) was followed by deprotection to 6,7-dihydro-3[(2-hydroxyethoxy)methyl]imidazo[4,5-d][1,3] diazepin-8(3H)-one (9b) and then reduction to the racemic acyclic pentostatin analogue (+/-)-3,6,7,8-tetrahydro-3-[ (2-hydroxyethoxy)methyl]imidazo[4,5-d][1,3]diazepin-8-ol (2). Ki values for the in vitro adenosine deaminase (EC 3.5.4.4; type I; calf intestinal mucosa) inhibitory
(8R)-3-(2-deoxy-beta-D-erythro-pentto呋喃呋喃糖基)-3,6,7,8-四氢咪唑并[4,5-d] [1,3] diazepin-8的几种类似物的合成描述了-ol(戊抑素,1a)。用原乙酸三乙酯或原丙酸三乙酯将2-氨基-1-(5-氨基-1H-咪唑-4-基)乙酮二盐酸盐(3)闭环得到C-5甲基和乙基酮基糖苷酸6,7-二氢-5 -甲基咪唑并[4,5-d] [1,3]二氮杂8-8(3b)-和5-乙基-6,7-二氢咪唑并[4,5-d] [1,3]二氮杂8 (3H)-一个(4c)。氯化锡催化4b和4c的过三甲基甲硅烷基衍生物与受保护的糖基卤化物缩合,得到酮核苷3-(2-脱氧-3,5-二-Op-甲苯甲酰基-β-和-α-D-赤型-呋喃呋喃糖基)的端基异构体混合物)-6,7-二氢-5-甲基咪唑并[4,5-d] [1,3]二氮杂pin-8(3H)-one(5b和6b)和3-(