Plant antitumor agents. 30. Synthesis and structure activity of novel camptothecin analogs
作者:Monroe E. Wall、Mansukh C. Wani、Allan W. Nicholas、Govindarajan Manikumar、Chhagan Tele、Linda Moore、Anne Truesdale、Peter Leitner、Jeffrey M. Besterman
DOI:10.1021/jm00070a013
日期:1993.9
A large number of camptothecin (CPT) analogs have been prepared in the 20S, 20RS, and 20R configurations with a number of ring A substituents. Topoisomerase I (T-I) inhibition data (IC50) have been obtained by standard procedures. In general, substitution at the 9 or 10 positions with amino, halogeno, or hydroxyl groups in compounds with 20S configuration results in compounds with enhanced T-I inhibition
Ru(III)-catalyzed construction of variously substituted quinolines from 2-aminoaromatic aldehydes (ketones) and isoxazoles: Isoxazoles as cyclization reagent and cyano sources
作者:Di Hu、Chao Pi、Wei Hu、Xiliang Han、Yangjie Wu、Xiuling Cui
DOI:10.1016/j.cclet.2021.12.072
日期:2022.8
N-O bond cleavage and fragmentation. Variously substituted (especially 6- or 7-substituted) quinolines could be easily afforded. This procedure features wide functional group compatibility, efficiency and avoiding toxic cyano source. Meanwhile, this protocol could be successfully applied to scale-up synthesis. Further chemical transformations of 3-cyanoquinoline could give some valuable skeletons, demonstrating
The present invention encompasses compounds of general formula (I)
wherein the groups R
1
to R
4
and A
1
to A
5
have the meanings given in the claims and in the specification. The compounds of the invention are suitable for the treatment of diseases characterized by excessive or abnormal cell proliferation pharmaceutical preparations containing such compounds and their uses as a medicament.
The present invention relates to compounds of Formula (I), or an agronomically acceptable salt of said compounds wherein X1, Y1, Y2, Z1, Z2, R1, R2, R5, R6, R9 and n are as defined herein. The invention further relates to herbicidal compositions which comprise a compound of Formula (I) and to the use of compounds of Formula (I) for controlling weeds, in particular in crops of useful plants.