Cyclo-release synthesis of cyclic disulfides on solid phase
摘要:
A method to synthesise on solid phase cyclic disulfides by a cycle-release reaction triggered by a dimethyl(thio)sulfonium moiety is described. (C) 2000 Published by Elsevier Science Ltd.
[EN] MULTIFUNCTIONALIZED POLYETHYLENE GLYCOL DERIVATIVE AND PREPARATION METHOD THEREFOR<br/>[FR] DÉRIVÉ DE POLYÉTHYLÈNE GLYCOL MULTIFONCTIONNALISÉ ET SON PROCÉDÉ DE PRÉPARATION<br/>[ZH] 一种多官能化聚乙二醇衍生物及其制备方法
The macrocyclization reaction of terminal dibromoalkanes with sulfide on alumina. The use of a solid support as an alternative to the high dilution technique.
作者:Lay Choo Tan、Richard M. Pagni、George W. Kabalka、Marc Hillmyer、Julie Woosley
DOI:10.1016/0040-4039(93)88023-c
日期:1992.12
PARTICLES COMPRISING AMPHIPHILIC COPOLYMERS, HAVING A CROSS-LINKED SHELL DOMAIN AND AN INTERIOR CORE DOMAIN, USEFUL FOR PHARMACEUTICAL AND OTHER APPLICATIONS
申请人:G.D. Searle & Co.
公开号:EP0907666A1
公开(公告)日:1999-04-14
MULTIFUNCTIONALIZED POLYETHYLENE GLYCOL DERIVATIVE AND PREPARATION METHOD THEREFOR
申请人:XIAMEN SINOPEG BIOTECH CO., LTD.
公开号:US20170312363A1
公开(公告)日:2017-11-02
Disclosed are a multifunctionalized polyethylene glycol derivative and a preparation method therefor. The derivative has an H-shaped structure as represented by formula (1) and comprises one linear core LPEG and four PEG branch chains, where n
1
, n
2
, n
3
, and n
4
respectively are the degrees of polymerization of the branch chains, U
1
and U
2
are trivalent branching groups connecting the core LPEG to two of the PEG branch chains, F
1
and F
2
contain a functional group or a protected form R
01
thereof and may or may not contain a branched group G, correspondingly, the number of R
01
is one or more, F
1
and F
2
are either identical or different, any one linking group in the molecule or any linking group formed with an adjacent heteroatom group can either remain stable or be degraded, and any one PEG segment in the molecule is discretely polydispersed or monodispersed. The multifunctional polyethylene glycol is flexible and diverse in terms of branch structures and the lengths of branching arms, has various parameters and performance indicators that are adjustable and easy to control, and has a broad applicability.