890315-74-9Relevant articles and documents
Asymmetric Synthesis of N-N Axially Chiral Compounds by Phase-Transfer-Catalyzed Alkylations
Pan, Ming,Shao, Ying-Bo,Zhao, Qun,Li, Xin
supporting information, p. 374 - 378 (2022/01/04)
N-N axially chiral skeletons are significant structural motifs in natural products, pharmaceuticals, and functional materials. Herein we disclose a method for the asymmetric synthesis of N-N axially chiral compounds by phase-transfer catalysis. A wide range of N-N axially chiral quinazolinone derivatives were prepared in high yields with excellent stereoselectivities. Furthermore, the synthetic utility of the protocol was proved by large-scale reaction and transformation of the product. Density functional theory calculations provide insight into the mechanism.
NOVEL ANTHRANILIC ACID DERIVATIVE OR SALT THEREOF
-
Page/Page column 57-58, (2008/06/13)
An anthranilic acid derivative represented by the general formula (X) [wherein R1 represents hydrogen or a carboxy-protecting group; R2 represents optionally substituted phenyl, a heterocyclic group, etc.; R3 represents optionally substituted phenyl, a monocyclic heterocyclic group, etc.; X1 represents carbonyl, etc.; X2 represents optionally substituted alkylene, a bond, etc.; X3 represents oxygen, a bond, etc.; and X4 represents a group represented by the general formula -X5-X6- or -X6-X5- (wherein X5 means oxygen, a bond, etc.; and X6 means optionally substituted alkylene, a bond, etc.)] or a salt of the derivative. The derivative or salt has an MMP-13 production inhibitory activity and is hence useful as a therapeutic agent for articular rheumatisum, osteoarthritis, cancer, etc.