Stereoselective total synthesis of (2S,3R)-3-hydroxypipecolic acid
摘要:
A concise, stereocontrolled synthesis of (2S,3R)-3-hydroxypipecolic acid 1 is described. Key features involve diastereoselective oxazoline formation catalyzed by palladium(0) and intramolecular cyclization by catalytic hydrogenation of an oxazoline. (C) 2008 Elsevier Ltd. All rights reserved.
Stereoselective total synthesis of (2S,3R)-3-hydroxypipecolic acid
作者:Van-Thoai Pham、Jae-Eun Joo、Yong-Shou Tian、Yun-Sung Chung、Kee-Young Lee、Chang-Young Oh、Won-Hun Ham
DOI:10.1016/j.tetasy.2008.01.010
日期:2008.2
A concise, stereocontrolled synthesis of (2S,3R)-3-hydroxypipecolic acid 1 is described. Key features involve diastereoselective oxazoline formation catalyzed by palladium(0) and intramolecular cyclization by catalytic hydrogenation of an oxazoline. (C) 2008 Elsevier Ltd. All rights reserved.
Synthesis of <scp>d</scp>- and <scp>l</scp>-Deoxymannojirimycin via an Asymmetric Aminohydroxylation of Vinylfuran
作者:Michael H. Haukaas、George A. O'Doherty
DOI:10.1021/ol006907j
日期:2001.2.1
[figure: see text] The Sharpless catalytic asymmetricaminohydroxylation has been applied to 2-vinylfuran, producing beta-hydroxyfurfurylamine 5a with enantioexcess of > 86% and 21% yield from furfural. The Cbz and TBS protected amino alcohol 5a was converted into both the D- and L-isomers of deoxymannojirimycin (DMJ) and deoxygulonojirimycin in five to seven steps and 48% and 66% overall yields. The