The synthesis of chiral 3-oxo-6-[(phenylmethoxy)-carbonyl]-2-piperazineacetic acid esters designed for the presentation of an aspartic acid side chain. A subsequent novel Friedel Crafts reaction
作者:Timothy P. Kogan、Thomas E. Rawson
DOI:10.1016/s0040-4039(00)60843-2
日期:1992.11
The syntheses of (2S, 6R)-, and (2S, 6S)-3-oxo-6-[(phenylmethoxy)carbonyl]-2,-piperazineacetic acid methyl esters from L- or D-serine and dimethyl-D-malate are described. Acylation of the (2S, 6S) isomer with 3-methoxyphenylacetyl chloride, hydrogenolysis of the benzyl ester, followed by treatment with oxalyl chloride then aluminum chloride led to an unexpected tricyclic product into which a C2O2 unit
由L-或D-丝氨酸和二甲基合成(2 S,6 R)-和(2 S,6 S)-3-氧代-6-[(苯基甲氧基)羰基] -2,-哌嗪乙酸甲酯-描述了D-苹果酸。(2- S,6S)异构体用3-甲氧基苯基乙酰氯酰化,苄基酯氢解,然后用草酰氯处理,然后用氯化铝处理,得到意想不到的三环产物,其中引入了C 2 O 2单元。