52485-05-9Relevant articles and documents
Synthesis of new triazamacrocycles N-functionalised with α-(S)- hydroxycarboxylic acid pendant-arms
Delagrange, Samuel,Nepveu, Francoise
, p. 4989 - 4992 (1999)
The synthesis of two new macrocyclic ligands, N,N',N''-tris[2(S)- hydroxybutyric acid]-1,4,7-triazacyclononane and N,N',N''-tris[2(S)- hydroxybutyric acid]-1,5,9-triazacyclododecane is reported. Each macrocycle bears three L-lactate-like pendant arms. Starting from L-malic acid, the absolute configuration of the α-(S)-hydroxy acid was kept along the synthesis leading to pure (S,S,S) enantiomers.
Synthesis of (S)-vasicol and (S)-3-hydroxy-2-pyrrolidinone
Huang, Pei-Qiang,Zheng, Xiao,Wei, Hua
, p. 1833 - 1841 (2007/10/03)
Starting from (S)-malic acid, a flexible approach to (S)-3-hydroxy-2-pyrrolidinone and (S)-1-alkyl-3-hydroxy-2-pyrrolidinones was reported. Using this method, the first total syntheses of (-)-vasicol as well as deaminovasicol were accomplished, which allowed the revision and clarification the confusion about the structure of naturally occurring (-)-vasicol.
Optically active compound having XI-valerolactone ring and liquid crystal composition comprising same
-
, (2008/06/13)
An optically active compound having a δ-valerolactone ring which is a ferroelectric liquid crystal and is represented by the following general formula (I): STR1 wherein m is an integer of from 1 to 8, Z is a group represented by the following formula: STR2 in which each of l and k is a number of 1 or 2 and l and k satisfy the requirement of 2≤(l+k)≤3, X stands for a direct bond, STR3 Y stands for STR4 and A1 and A2 independently stand for --H, --F or --Cl, STR5 R stands for STR6 in which n is an integer of from 1 to 18, and * indicates the asymmetric carbon atom.
