Synthesis of C-arabinofuranosyl compounds. Phosphonate and carboxylate isosteres of d-arabinose 1,5-bisphosphate
作者:Bruce E. Maryanoff、Samuel O. Nortey、Ruth R. Inners、Susan A. Campbell、Allen B. Reitz、Dennis Liotta
DOI:10.1016/s0008-6215(00)90891-7
日期:1987.12
key importance in the successful synthesis of a phosphonate analog of β- d -arabinose 1,5-bisphosphate ( 1 ), namely, 2,5-anhydro-1-deoxy-1-phosphono- d -glucitol 6-phosphate ( 4 ), whith high stereoselectivity. By contrast, condensation of the sodium salt of tetraethyl methylenediphosphonate and 2,3,5-tri- O -benzyl- d -arabinose ( 7 ) gave a phosphonate compound slightly enriched in the 2,5-anhydro-
摘要用N-溴代琥珀酰亚胺对3,4,6-tri-O-苄基-1,2-二脱氧-d-阿拉伯糖-hex-1-烯醇进行亲电介导的环化反应主要产生2,5-脱水-3,4,6 -三-O-苄基-1-溴-1-脱氧-d-葡萄糖醇(10)。在成功合成β-d-阿拉伯糖1,5-双磷酸酯(1)的膦酸酯类似物(即2,5-脱水-1-脱氧1-膦酰基-d-)的成功合成中,这一显然由动力学控制的反应至关重要。具有高立体选择性的6-磷酸葡萄糖醇(4)。相反,将亚甲基二膦酸四乙酯的钠盐与2,3,5-三-O-苄基-d-阿拉伯糖(7)缩合,得到的膦酸酯化合物稍微富含2,5-脱水-d-甘露糖醇(α)。异构体。在稳定的phosphor烷与7的维蒂希-迈克尔反应中,α异构体占优势。由于甲基3,6-脱水-4,5的平衡,7-三-O-苄基-2-脱氧-d-甘油-d-半乳糖-(33)和-d-gulo-庚酸酯(34)(5:1)导致α:β比率为1:1 2,5