The Concise Synthesis of a <i>tert</i>-Butoxycarbonyl Derivative of (3<i>R</i>,4<i>S</i>)-4-Amino-3-hydroxy-7-(<i>N</i>-nitrosohydroxyamino)-2,2-dimethylheptanoate, a Component of JBIR-141
作者:Kotaro Yasoshima、Masahito Yoshida、Takayuki Doi
DOI:10.1246/bcsj.20220035
日期:2022.5.15
α,α- dimethylheptanoate possessing a scarce N- nitrosohydroxylamine moiety at the ω-position has been demonstrated. Reduction of γ-amino-β-hydroxy-α,α- dimethylheptanoate derivatives with LiAlH(Ot-Bu)3/ether provided (3R,4S)-diastereomer up to 84% dr, whereas that with L-Selectride exclusively afforded (3S,4S)-diastereomer. The N- nitrosohydroxylamine moiety was introduced from N-Cbz-benzyloxyamine
已证明(3 R ,4 S )-γ-氨基-β-羟基-α,α-二甲基庚酸酯的合成在 ω 位具有稀有的N-亚硝基羟胺部分。用 LiAlH(Ot-Bu) 3 /醚还原 γ-氨基-β-羟基-α,α-二甲基庚酸酯衍生物提供高达 84% dr 的(3 R ,4 S )-非对映异构体,而使用 L-Selectride 仅提供(3 S ,4 S )-非对映异构体。N-亚硝基羟胺部分通过选择性去除Cbz基团、亚硝化和苄基氢解从N -Cbz-苄氧基胺中引入。