Carbohydrate-like chiral synthons: Synthesis of the N-trifluoroacetyl derivatives of 4-amino-2,4,6-trideoxy-l-lyxo-, -l-arabino, and -l-ribo-hexose from the (2S,3R)-2,3-diol formed from cinnamaldehyde in fermenting baker's yeast
作者:Giovanni Fronza、Claudio Fuganti、Piero Grasselli、Giuseppe Pedrocchi-Fantoni
DOI:10.1016/0008-6215(85)85190-9
日期:1985.2
formed from cinnamaldehyde in fermenting baker's yeast, affords, with diallyl-zinc, the C7, carbohydrate-like, noncarbohydrate-derived adduct (2S,3R,4R)-2,3-isopropylidenedioxy-4-hydroxyhept-6-ene (9). This material is a stereochemically defined, functionalised, chiral synthon which is useful in the synthesis of enantiomerically pure products. The synthesis of the N-trifluoroacetyl derivatives of 4-amino-2
摘要(2S,3S)-2,3-异丙基二烯二氧基丁醛,是通过将肉桂醛形成的O-异丙基亚甲基化的(2S,3R)-2,3-二醇在面包师酵母中进行臭氧分解而制得的,它与二烯丙基锌一起提供C7,碳水化合物样,非碳水化合物衍生的加合物(2S,3R,4R)-2,3-异丙基二烯二氧基-4-羟基庚-6-烯(9)。该物质是立体化学定义的,官能化的手性合成子,可用于合成对映体纯的产物。据报道,由9合成了4-氨基-2,4,6-三苯氧基-1-lyxo(21),-1-阿拉伯糖(22)和-l-核糖己糖(23)的N-三氟乙酰基衍生物。 。合成中的关键中间体是异构的环氧醇(2S,3S,4S)-3,4-环氧庚烷6-烯-2-醇,(2S,3R,4S)-2,3-环氧庚烷-6-烯- 4-ol和(2S,3R,4R)-2,3-epoxyhept-6-en-4-ol。