Synthesis of a 2,4-diaminodihydrohomopteridine, 6-acetyl-2,4-diamino-7,8-dihydro-9H-pyrimido[4,5-b][1,4]diazepine, using a furazano[3,4-d]pyrimidine precursor
作者:Peter H. Boyle、Enid M. Hughes、Hassan A. Khattab
DOI:10.1016/s0040-4020(01)87137-4
日期:1991.1
hydroxylamines under mild conditions, with the introduction of an N-substituent at position 7. Using this reaction of (3) with 1-amino-4,4-diethoxy-3-pentanol (16), a synthesis of 6-acetyl-2,4-diamino-7,8-dihydro-9H-pyrimido[4,5-b][1,4]diazepine, (2), was achieved. Compound (2) is an amino analogue of a naturally occurring dihydrohomopterin (1).
5-氨基-7-(甲硫基)呋喃并[3,4-d]嘧啶(3)在温和的条件下易于与多种胺和羟胺反应,在位置7引入N-取代基。 (3)与1-氨基-4,4-二乙氧基-3-戊醇(16)合成6-乙酰基-2,4-二氨基-7,8-二氢-9 H-嘧啶[4,5-b获得了[2,4]二氮杂[1,4]。化合物(2)是天然存在的二氢单蝶呤(1)的氨基类似物。