β-Homo-peptides Built from β2,2-HBip, a Biphenyl-substituted 3-Amino-2,2-dimethylpropanoic Acid
作者:Anne Gaucher、Michel Wakselman、Jean-Paul Mazaleyrat、Marco Crisma、Fernando Formaggio、Claudio Toniolo
DOI:10.1016/s0040-4020(00)00075-2
日期:2000.3
reduction of the cyano group. Both its C- and N-protected derivatives have been obtained. A slow interconversion at the NMR time scale is generally observed between the two enantiomers of the conformationally labile β2,2-HBip residue. The homo-peptides Boc-(β2,2-HBip)n-OMe have been prepared in solution by the EDC/HOBt coupling method to the hexamer level and a preliminary conformational analysis has been
β一种新颖的2,2- -宝石二取代的氨基酸,β 2,2- -HBip,已经通过烷基氰基乙酸酯的α,α-双-烷基化合成与2,2'-双(溴甲基)-1,1' -二苯基,然后用NaBH 4 / CoCl 2还原氰基。已经获得了其C-和N-保护的衍生物。在NMR时间尺度缓慢互一般构象不稳定的β的两种对映体之间观察到2,2- -HBip残基。均聚肽的Boc-(β 2,2- -HBip)ñ -OMe已在由EDC /添加HOBt偶联方法将六聚体水平和初步构象分析溶液制备已被执行11 H NMR和FT-IR吸收技术。