Structure-activity relationships of a novel class of Src SH2 inhibitors
摘要:
The structure-activity relationships (SAR) of a novel class of Src SH2 inhibitors are described. Variation at the pY+1 and pY+3 side chain positions using 2,4- and 2,5-substituted thiazoles and 1,2,4-oxadiazoles as scaffolds resulted in inhibitors that bound as well as the standard tetrapeptide Ac-pYEEI-NH2. (C) 1999 Elsevier Science Ltd. All rights reserved.
POLYMER OF GAMMA-GLUTAMYL TRANSPEPTIDASE CATALYZING HYDROLYSIS-INDUCED CHARGE REVERSAL AND ITS APPLICATION IN THE FIELD OF DRUG DELIVERY
申请人:ZHEJIANG UNIVERSITY
公开号:US20200215197A1
公开(公告)日:2020-07-09
This present invention relates to a polymer of γ-glutamyl transpeptidase catalyzing hydrolysis-induced charge reversal. The polymer comprises a γ-glutamyl transpeptidase-responsive element represented by Formula (I). When the polymer is used as drug carrier for anticancer drug, it can have a long circulation time in the blood, and can realize a charge reversal from negatively charged or the neutral to positively charged around the tumor blood vessel region, so that the positively charged polymer effectively penetrates deep into the tumor tissue, fast entering into the tumor cells, and greatly improves the therapeutic effect of the drug on the tumor. This overcomes the problems of slow diffusion of traditional polymer drug carriers in tumors and weak interaction with tumor cells, and has great significance in the field of anticancer treatment in the medical field.
Pepstatin analogues corresponding to the general formula A-X-Y-Sta-Ala-Sta-R were synthesized in solution phase. Various changes in the nature of the A, X, and Y groups were made to improve the inhibitory potency against human plasma renin activity. The results were interpreted by use of the active-site model based on the sequence of human angiotensinogen. The tert-butyloxycarbonyl group and the isovaleryl
在溶液相中合成对应于通式AXY-Sta-Ala-Sta-R的胃抑素类似物。进行了A,X和Y基团性质的各种变化以提高对人血浆肾素活性的抑制能力。通过使用基于人类血管紧张素原序列的活性位点模型来解释结果。发现叔丁氧羰基和异戊酰基是最有效的酰基(A)。在Y位置具有Phe残基代替Val1(X)和His或具有脂肪族侧链的氨基酸(如正亮氨酸或正缬氨酸)的类似物显示出对人血浆肾素活性的最高抑制作用,IC50值约为10(-8) M. C-末端他汀类化合物的羧基的酯化或酰胺化不会改变抑制能力。
A general method for the synthesis of thioester resin linkers for use in the solid phase synthesis of peptide-α-thioacids
作者:Lynne E. Canne、Sharon M. Walker、Stephen B.H. Kent
DOI:10.1016/0040-4039(95)00037-d
日期:1995.2
A generalized procedure for the synthesis of thioester linkers for use in stepwise solidphase peptide synthesis is reported. The linkers are compatible with Boc chemistry and, upon cleavage in HF, generate peptide C-terminal thioacids.
The invention relates to novel quinazolinone compounds and their use as inhibitors of PI3 kinases, for example, PI3Kδ, for treating and/or preventing diseases, disorder, and conditions associated with modulating PI3 kinase activity. Novel 3-aryl-2-((arylamino)methyl)quinazolin-4(3H)-one derivatives and pharmaceutically acceptable salts or solvates thereof and their use for the treatment or prevention of diseases, disorders, and conditions associated with the activity of one or more PI3 kinase, such as PI3Kδ, are disclosed.