Synthesis of racemic 5-phosphonate analogues of myo-inositol 1,4,5-tris- and 1,3,4,5-tetrakis-phosphate
作者:Cornelis E. Dreef、Jan-Pieter Jansze、Cornelius J.J. Elie、Gijs A. van der Marel、Jacques H. van Boom
DOI:10.1016/0008-6215(92)85037-z
日期:1992.10
(+/-)-2,3,6-Tri-O-benzyl-5-0-p-methoxybenzyl-myo-inositol and (+/-)-2,6-di-O-benzyl-5-0-p-methoxybenzyl-myo-inositol, accessible readily from (+/-)-3,6-di-O-allyl-1,2-0-cyclohexylidene-myo-inositol, were phosphitylated with dibenzyl N,N-di-isopropylphosphoramidite, and the resulting phosphite triesters were oxidised with tert-butyl hydroperoxide to give the corresponding fully protected myo-inositol 1,4-bis- (12) and 1,3,4-tris-phosphate (13) derivatives. Cleavage of the p-methoxybenzyl group from 12 and 13, phosphonylation with bis[6-(trifluoromethyl)benzotriazol-1-yl] methylphosphonate or (difluoromethyl)phosphonic di(1,2,4-triazolide), followed by treatment in situ with benzyl alcohol, and then hydrogenolysis of the benzyl groups gave the 5-methylphosphonate and 5-[(difluoromethyl)phosphonate] analogues of myo-inositol 1,4,5-tris- and 1,3,4,5-tetrakis-phosphate. The 5-methylphosphonate analogue of myo-inositol 1,4,5-trisphosphate acted as a calcium antagonist in permeabilized human platelets.
(±)-2,3,6-三-O-
苄基-5-O-p-甲
氧基
苄基-D-赤型肌醇和(±)-
2,6-二-O-
苄基-5-O-p-甲
氧基
苄基-D-赤型肌醇能从(±)-3,6-二-O-
烯丙基-1,2-O-
环己基-D-赤型肌醇方便地获得。它们使用二
苯甲基-
N,N-二异丙基磷酰胺进行
磷酰化,随后用 tert-丁基过
氧化物对生成的
磷酰三
酯进行
氧化,得到对应的完全保护的D-赤型肌醇 1,4-双-(12) 和 1,3,4-
三磷酸酯 (13) 衍
生物。随后,12 和 13 中的 p-甲
氧基
苄基通过与双[6-(三
氟甲基)
苯并三唑-1-基]
甲基磷酰胺或 (二
氟甲基)
磷酰酸二(
1,2,4-三唑基)进行
磷酸化,再用
苯甲醇原位处理,接着进行
苯甲基的
氢解,得到 5-
甲基磷酰基和 5-[(二
氟甲基)
磷酰基]的 D-赤型肌醇 1,4,5-
三磷酸和 1,3,4,5-四基
磷酸的类似物。D-赤型肌醇 1,4,5-
三磷酸的 5-
甲基磷酰基类似物在透化的血小板中作为
钙拮抗剂发挥作用。