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Synthesis of Macrocyclic Stereoisomers Substituted with Oligolactide Fragments
Authors
Gorbachuk V.
Padnya P.
Stoikov I.
Publication date
1 January 2018
Publisher
Abstract
© 2018, Pleiades Publishing, Ltd. Acylation of cone and 1,3-alternate stereoisomers of hydrazides of p-tert-butylthaicalix[4]arene tetrasubstituted at the lower rim with S,S-lactide in dimethylsulfoxide has afforded the macrocyclic oligolactide derivatives containing 16 (cone) to 24 (1,3-alternate) lactide fragments. It has been shown that nanosized aggregates (80 nm) are formed with silver nitrate in the case of the cone stereoisomer containing the oligolactide fragments at one side of the macrocyclic rim, whereas submicron particles (400 nm) are formed in the case of the 1,3-alternate conformation when the substituents are at different sides of the macrocycle
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Last time updated on 07/05/2019