A cascade synthetic route to new bioactive spiroindolinepyrido[1,2-a]indolediones from indirubin
摘要:
The allylation of indirubin produced the expected indolic N'-allylindirubin and N,N'-diallylindirubin derivatives in moderate yields, together with the corresponding N-substituted isatin products. At higher temperatures, the base-initiated reaction with allylic halides yielded spiroindolinepyrido[1,2-a]indolediones in a one-pot cascade reaction sequence with yields of up to 70%. These readily accessed, new Spiro compounds represent the first reported examples of indirubin participating in cascade reactions. Preliminary in vitro biological testing of some of the products indicated promising activity against some cancer cell lines and against Plasmodium falciparum for two spiro derivatives. Computational methods were used to gain a greater understanding of the UV/Vis spectroscopic data for the N'-substituted and N,N'-disubstituted indirubin derivatives. (C) 2015 Elsevier Ltd. All rights reserved.
Synthesis of novel aromatic macrolactones via ring closing metathesis of substituted phenylalkanoic acid allylic esters
作者:David P. Brown、Hoan Q. Duong
DOI:10.1002/jhet.5570450222
日期:2008.3
Stable aromaticmacrolactones have been synthesized and characterized from 2- and 3-substituted phenylalkanoicacid systems in modest yields.
从2-和3-取代的苯基链烷酸体系以适度的产率合成并表征了稳定的芳族大内酯。
[EN] FUNCTIONAL SKIN COATING POLYMER<br/>[FR] POLYMÈRE FONCTIONNEL POUR APPLICATION CUTANÉE
申请人:UNIV JOHNS HOPKINS
公开号:WO2021242976A1
公开(公告)日:2021-12-02
Film-forming polymers that contain covalently-attached or non-covalently bound light-filtering, e.g., UV-absorbing, compounds and their use as a skin-protectant coating, such as a sunscreen, are disclosed.