Solid-phase synthesis of enantio-controlled lactic acid oligomers

被引:1
|
作者
Kim, Seong-Ho [1 ,3 ]
Sim, Yong-Kyun [1 ]
Kim, Bum-Tae [1 ]
Kim, Yong Hwan [2 ]
Kim, Yeong-Joon [3 ]
Park, Seongsoon [4 ]
Lee, Hyuk [1 ]
机构
[1] Korea Res Inst Chem Technol, Med Chem Res Ctr, Taejon 305600, South Korea
[2] Kwangwoon Univ, Dept Chem Engn, Seoul 139701, South Korea
[3] Chungnam Natl Univ, Dept Chem, Taejon 305764, South Korea
[4] Sungshin Womens Univ, Dept Chem, Ctr NanoBio Appl Technol, Inst Basic Sci, Seoul 136742, South Korea
关键词
POLYMERS; POLYMERIZATION; DEPSIPEPTIDES; COPOLYMERS; DEPSIDES; DELIVERY; SYSTEMS; ESTERS;
D O I
10.1016/j.tetasy.2011.08.021
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
A synthetic method for lactic acid oligomers via solid-phase synthesis under mild reaction conditions with up to 99% yield is presented. The fine control of the chirality on each lactic acid unit of the oligomers was easily achieved by the substitution of (R)-THP-protected lactic acid (R)-2 by (S)-2 without alternating the procedure. The overall synthesis of the trimer and tetramer was completed in one and two days, respectively. Intramolecular cyclizations of enantio-controlled lactic acids were also attempted through the Yamaguchi macrolactonization or the Mitsunobu reaction. However, we were unable to isolate single cyclic oligomers but always obtained a mixture of cyclic oligomers. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1499 / 1504
页数:6
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