Analogs related to 1α, 25-dihydroxy-2β-(3-hydroxypropoxy)vitamin D3 (ED-71)(4), oxa-type and carba-type analogs of vitamin D3 bearing substituents at the 2β-position of 1α, 25-dihydroxyvitamin D3 (1), were synthesized from the α-epoxides (6 and 13). Three analogs, ED-71 (4) and two carba-type analogs (16 and 26), showed potent preventive effects on bone mineral loss in pre-osteoporosis model rats. ED-71 (4) was concluded to be an optimized analog and a promising candidate for the treatment of osteoporosis.
由α-
环氧化物(6 和 13)合成了与 1α,25-二羟基-2β-(3-羟基丙氧基)
维生素 D3 (ED-71)(4) 有关的类似物,以及在 1α,25-二羟基
维生素 D3 (1) 的 2β 位上带有取代基的
维生素 D3 的羰基型和羧基型类似物。三种类似物,即 ED-71 (4) 和两种卡巴型类似物(16 和 26),对骨质疏松症前期模型大鼠的骨矿物质流失具有有效的预防作用。ED-71(4)被认为是一种优化的类似物,有望成为治疗骨质疏松症的候选药物。