Enzyme-catalysed hydrolysis of N-benzyloxycarbonyl-cis-2,6-(acetoxymethyl)piperidine. A facile route to optically active piperidines
摘要:
We report the first enzymatic asymmetrization of a piperidine system. Hydrolysis of N-benzyloxycarbonyl-cis-2,6-(acetoxymethyl)piperidine in the presence of Aspergillus niger lipase gave the corresponding 2R, 6S mono-acetate in good chemical yield and very high optical purity (ee greater-than-or-equal-to 98%).
Asymmetric Cleavage of 9-Azabicyclo[3.3.1]nonan-3-one into<i>cis</i>-2,6-Disubstituted Piperidine. A Facile Approach to a Chiral Building Block for Alkaloid Synthesis
作者:Takefumi Momose、Naoki Toyooka、Yoshiro Hirai
DOI:10.1246/cl.1990.1319
日期:1990.8
An asymmetric cleavage of the ‘fork head’ ketone of 9-azabicyclo[3.3.1]nonan-3-one gave a cis-2,6-disubstituted piperidine derivative in 93% ee, which was transformed to the cis-2,6-bis(hydroxymethyl)piperidine derivative, a versatile chiral building block.
9-氮杂双环 [3.3.1]nonan-3-one 的“叉头”酮的不对称裂解得到 93% ee 的 cis-2,6-二取代哌啶衍生物,其转化为 cis-2,6 -双(羟甲基)哌啶衍生物,一种通用的手性结构单元。
Momose, Takefumi; Toshima, Minoru; Toyooka, Naoki, Journal of the Chemical Society. Perkin transactions I, 1997, # 9, p. 1307 - 1313
作者:Momose, Takefumi、Toshima, Minoru、Toyooka, Naoki、Hirai, Yoshiro、Eugster, Conrad Hans
DOI:——
日期:——
MOMOSE, TAKEFUMI;TOYOOKA, NAOKI;HIRAI, YOSHIRO, CHEM. LETT.,(1990) N, C. 1319-1322