PROCESS FOR PREPARATION OF OPTICALLY ACTIVE 1-SUBSTITUTED AMINO-2,3-EPOXYPROPANES, INTERMEDIATES FOR THE SYNTHESIS THEREOF AND PROCESS FOR PREPARATION OF THE INTERMEDIATES
[EN] TOPOISOMERASE INHIBITORS WITH ANTIBACTERIAL AND ANTCANCER ACTIVITY<br/>[FR] INHIBITEURS DE LA TOPOISOMÉRASE AYANT UNE ACTIVITÉ ANTIBACTÉRIENNE ET UNE ACTIVITÉ ANTI-CANCÉREUSE
申请人:UNIV ILLINOIS
公开号:WO2018237140A1
公开(公告)日:2018-12-27
Inhibitors of human topoisomerase II (Top2) are the backbone of numerous cancer chemotherapy regimens. Unfortunately, the onset of toxicity severely limits the utility of these powerful drugs. There is some conservation between human Top2 and bacterial homologues (DNA gyrase and TopoIV). Thus, the conversion of antibacterial topoisomerase inhibitors into antineoplastic agents is an intriguing strategy for anticancer compounds. Herein is described the conversion of deoxynybomycin (DNM), a natural product and DNA gyrase inhibitor with minimal cytotoxicity, into a compound that has anticancer activity. Detailed in vitro and cell culture experiments demonstrate that these compounds inhibit Top2 and also act upon topoisomerase I. Similar approaches are applicable to other classes of gyrase inhibitors and other antibacterial targets for discovery of new anticancer drugs.
A 2,3-butanedione protected chiral glycine equivalent—a new building block for the stereoselective synthesis of enantiopure N-protected α-amino acids
作者:Darren J. Dixon、Christopher I. Harding、Steven V. Ley、D. Matthew G. Tilbrook
DOI:10.1039/b210673f
日期:2003.2.7
A newchiralglycine equivalent 7 has been synthesised from glycidol using a chiral memory protocol, and its use in the synthesis of N-Z protected alpha-amino acids was demonstrated in a series of diasteroselective lithium enolate alkylation reactions and subsequent acid hydrolyses.
Process for preparation of optically active 1-substituted amino-2,3-epoxypropanes, intermediates for synthesis thereof and process for preparation of the intermediates
申请人:Kitajima Kumi
公开号:US20050215801A1
公开(公告)日:2005-09-29
The present invention provides an industrial process for effectively and advantageously preparing optically active 1-substituted amino-2,3-epoxypropanes useful as intermediates for preparing agricultural chemicals and medical products from optically active 1-substituted amino-2,3-propanediols used as raw materials. The present invention also provides useful intermediates. Specifically, an optically active 1-substituted amino-2,3-propanediol (1) is reacted with an orthoacid ester (2) or thionyl chloride (3) to produce a cyclic optically active compound (4), and then a compound (5) containing a halogen atom is prepared by reaction with a ring-opening reaction agent having an ability to introduce a halogen atom X. Finally, an optical active 1-substituted amino-2,3-epoxypropane is prepared by ring-closure reaction in the presence of a base.