On August 1, 2017, Shan, Wei-Guang; Wang, Han-Guang; Chen, Yan; Wu, Rui; Wen, Yan-Tao; Zhang, Li-Wen; Ying, You-Min; Wang, Jian-Wei; Zhan, Zha-Jun published an article.Recommanded Product: 4-Ethyl-piperazine-1-carbonyl chloride The title of the article was Synthesis of 3- and 29-substituted celastrol derivatives and structure-activity relationship studies of their cytotoxic activities. And the article contained the following:
A series of 3-carbamate and 29-ester celastrol derivatives I (R1 = H, R2 = H, Me, Et, CHMe2, CH2CH:CH2, CH2Ph, 3-ClC6H4CH2, etc.; R1 = CONMePh, piperidinocarbonyl, morpholinocarbonyl, etc.) were designed and synthesized. These analogs were evaluated for their cytotoxic activities against several cancer cell lines. Cytotoxicity data revealed that the properties of substituents and substitution position had important influence on cytotoxic activity. Modification of C-3 hydroxyl with size-limited groups did not reduce the activity obviously. The introduction of polarity group like piperazine could improve the solubility Compound I (R1 = 4-piperazinocarbonyl, R2 = CH2Ph) (II) was chosen to further evaluate anti-tumor efficacy in vivo. It showed higher inhibition rate and better safety than celastrol during in vivo experiment by intragastric administration. The preliminary antitumor studies of compound II in vivo showed that it might be promising for the development of new antitumor agents. The experimental process involved the reaction of 4-Ethyl-piperazine-1-carbonyl chloride(cas: 53788-12-8).Recommanded Product: 4-Ethyl-piperazine-1-carbonyl chloride
The Article related to celastrol derivative preparation antitumor structure activity, c-3 hydroxyl derivatives, celastrol, cytotoxicity, in vivo activity, intragastric administration, Terpenes and Terpenoids: Triterpenes (C30), Including Limonoids and other aspects.Recommanded Product: 4-Ethyl-piperazine-1-carbonyl chloride
Referemce:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics