Efficient and Selective Synthesis of <scp>d</scp>-<i>arabino</i>-, <scp>d</scp>-<i>lyxo</i>-, and <scp>d</scp>-<i>xylo</i>-Phytosphingosine from <scp>d</scp>-<i>ribo</i>-Phytosphingosine
作者:Sanghee Kim、Nakyong Lee、Sukjin Lee、Taeho Lee、Yun Mi Lee
DOI:10.1021/jo702147y
日期:2008.2.1
A new high-yield approach to the regio- and stereoselective synthesis Of D-arabino-, D-lyxo-, and D-xylo-phytosphingosines from inexpensive D-ribo-phytosphingosine is described. The synthetic methodologies mainly rely on the selective configurational inversion of the stereocenter through a neighboring group participation mechanism.
Nitrolaldol reaction of (R)-2,3-cyclohexylideneglyceraldehyde: a simple and stereoselective synthesis of the cytotoxic Pachastrissamine (Jaspine B)
作者:Prasad Vichare、Angshuman Chattopadhyay
DOI:10.1016/j.tetasy.2010.06.024
日期:2010.8
(R)-2,3-Cyclohexylideneglyceraldehyde 1 has been found to be a good substrate for nitroaldol reaction both in anhydrous and aqueous conditions. In both cases, the reaction took place with good substrate-controlled anti-selectivity. The major nitroaldol product 2b has been exploited to develop a simple and stereoselective synthesis of jaspine B X. Also, beginning with nitroaldol reaction of 1, this route presents a simple approach for the stereoselective preparation of (anti-anti-5,7)- and (syn-syn-9, 11, 12)-1,2,3,4-alkanetetrols, each possessing three contiguous oxygenated stereocenters. (C) 2010 Elsevier Ltd. All rights reserved.
A novel stereoselective synthesis of pachastrissamine (jaspine B) starting from 1-pentadecanol
作者:K. Venkatesan、K.V. Srinivasan
DOI:10.1016/j.tetasy.2007.12.001
日期:2008.2
A novel stereoselective synthesis of pachastrissamine (jaspine B), starting from commercially available 1-pentadecanol is described. Sharpless asymmetric dihydroxylation and a chelation controlled vinyl Grignard reaction are the key steps in this synthetic strategy. (C) 2007 Elsevier Ltd. All rights reserved.
SCHMIDT, RICHARD R.;MAIER, THOMAS, CARBOHYDR. RES., 174,(1988) 169-179
作者:SCHMIDT, RICHARD R.、MAIER, THOMAS
DOI:——
日期:——
Syntheses and biological activities of KRN7000 analogues having aromatic residues in the acyl and backbone chains with varying stereochemistry
作者:Jeong-Ju Park、Ji Hyung Lee、Kyung-Chang Seo、Gabriel Bricard、Manjunatha M. Venkataswamy、Steven A. Porcelli、Sung-Kee Chung
DOI:10.1016/j.bmcl.2009.12.103
日期:2010.2
effort to understand the structure–activity relationships, we have carried out syntheses of 26 new KRN7000 analogues incorporating aromatic residues in either or both side chains. Structural variations of the phytosphingosine moiety also include varying stereochemistry at C3 and C4, and 4-deoxy and 3,4-dideoxy versions. Their biological activities are described.