Fragment self-assembly was used for producing clusters with a variety of scaffolds and ligands, and an effective siRNA vector was identified.
片段自组装被用于生产具有多种支架和配体的簇,并成功识别了一种有效的siRNA载体。
Formation of hydrazones and stabilized boron–nitrogen heterocycles in aqueous solution from carbohydrazides and ortho-formylphenylboronic acids
作者:Han Gu、Tak Ian Chio、Zhen Lei、Richard J. Staples、Jennifer S. Hirschi、Susan Bane
DOI:10.1039/c7ob01708a
日期:——
with ortho-carbonyl substituted phenylboronic acids. Carbohydrazides are easily incorporated into biomolecules, making them appealing substrates in these reactions. Here we show that simple alkyl carbohydrazides form a single product with ortho-formylphenylboronic acid in organic solvent and in solid state. The solution structures of the products formed from the carbohydrazides in buffered aqueous solution
Fragment Linking and Optimization of Inhibitors of the Aspartic Protease Endothiapepsin: Fragment‐Based Drug Design Facilitated by Dynamic Combinatorial Chemistry
作者:Milon Mondal、Nedyalka Radeva、Hugo Fanlo‐Virgós、Sijbren Otto、Gerhard Klebe、Anna K. H. Hirsch
DOI:10.1002/anie.201603074
日期:2016.8
with fragments, we designed a library of bis‐acylhydrazones and used DCC to identify potent inhibitors. The most potent inhibitor exhibits an IC50 value of 54 nm, which represents a 240‐fold improvement in potency compared to the parent hits. Subsequent X‐ray crystallography validated the predicted bindingmode, thus demonstrating the efficiency of the combination of fragment linking and DCC as a hit‐identification
基于片段的药物设计(FBDD)为生物靶标提供活性化合物。虽然通过片段增长/优化有大量关于 FBDD 的报道,但片段链接却很少报道。动态组合化学(DCC)已成为生物靶标的强大命中识别策略。我们报告了片段连接和 DCC 的协同组合来鉴定天冬氨酸蛋白酶内硫肽酶的抑制剂。基于内硫肽素与片段复合物的 X 射线晶体结构,我们设计了双酰腙库并使用 DCC 来鉴定有效的抑制剂。最有效的抑制剂的 IC 50值为 54 nm ,与母体命中相比,效力提高了 240 倍。随后的 X 射线晶体学验证了预测的结合模式,从而证明了片段连接和 DCC 组合作为命中识别策略的效率。这种方法可以应用于一系列生物靶标,并有可能促进从命中到先导的优化。
Sodium hypochlorite-mediated synthesis of 2,5-disubstituted 1,3,4-oxadiazoles from hydrazides and aldehydes
A simple and convenient method for the synthesis of 2,5-disubstituted1,3,4-oxadiazoles has been developed. Structurally divergent symmetrical and unsymmetrical 2,5-disubstituted1,3,4-oxadiazoles can be obtained in moderate to high yields via NaOCl-mediated oxidative cyclization of N-acylhydrazones, generated in situ from aliphatic and aromatic hydrazides and aldehydes.
On the Hydrazinolysis of Proteins and Peptides: A Method for the Characterization of Carboxyl-terminal Amino Acids in Proteins
作者:Shiro Akabori、Ko Ohno、Kozo Narita
DOI:10.1246/bcsj.25.214
日期:1952.3
(1) A brief method for the characterization of carboxyl-terminalaminoacids in peptides and proteins was investigated. (2) Several newaminoacid hydrazides were synthesized. (3) Soveral di- and tri-peptides were hydrazinolyzed and identified their carboxylterminal aminoacid. (4) The method was applied to beef insulin and tyrocidin for the demonstration of its applicability.