67883-07-2Relevant academic research and scientific papers
Design, synthesis, crystal structure, and herbicidal activity of novel pyrrolidine-2,4-dione derivatives incorporating an alkyl ether pharmacophore with natural tetramic acids as lead compounds
Chen, Min,Geng, Chun-Wen,Han, Ling,Liu, Yu,Yu, Yong-Kai,Lu, Ai-Min,Yang, Chun-Long,Li, Guo-Hua
, p. 5621 - 5630 (2021/04/06)
In order to discover green herbicides with novel molecular scaffolds, natural tetramic acids were used as lead compounds to design and synthesize four pyrrolidine-2,4-dione derivatives incorporating a chainlike alkoxyalkyl moiety (4a-4d) and nineteen pyrrolidine-2,4-dione derivatives incorporating a substituted phenoxyethyl moiety (10a-10s)viasubstitution, acylation, cyclization, and acidification reactions. The synthesized target compounds were confirmed by FT-IR,1H NMR,13C NMR and HRMS spectral analyses. The single-crystal structure of compound10awas analyzed by X-ray diffraction, which revealed that the 1-hydroxyethylidene group links the third position of the pyrrolidine heterocycle through a double bond with theZ-configuration. The herbicidal activity was evaluated using barnyard grass (Echinochloa crus-galli) and rape (Brassica campestris) as model plants by a Petri dish culture method. Most target compounds were found to possess moderate to good inhibitory activities against the plant growth at 100 μg mL?1. Among them, the compounds10qand10nshowed the highest herbicidal activities against the roots of barnyard grass and rape seedlings with the corresponding inhibition rates of 65.6% and 84.0%, respectively. This result indicated that pyrrolidine-2,4-dione derivatives incorporating a substituted phenoxyethyl moiety are worthy of further structural optimization.
Method for treating glaucoma
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, (2008/06/13)
Methods of using prostaglandin agonists for the reduction of intraocular pressure, and accordingly glaucoma.
Prevention of loss and restoration of bone mass by certain prostaglandin agonists
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, (2008/06/13)
Prostaglandin agonists of formula (I), in which, for example, A is a sulphonyl or acyl group, B is N or CH, M contains a ring and K and Q are linking groups, methods of using such prostaglandin agonists, pharmaceutical compositions containing such prostaglandin agonists and kits useful for the treatment of bone disorders including osteoporosis. STR1
Method of treating cardiac disorders with N-(aryloxyalkyl)-N'-(aminoalkyl)ureas
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, (2008/06/13)
N-(Aryloxyalkyl)-N'-(aminoalkyl)ureas and thioureas having the formula: STR1 wherein R1 and R2 are hydrogen, loweralkyl, cycloalkyl, phenyl or phenyllower alkyl, and R3 and R4 are hydrogen, loweralkyl, phenyl and phenylalkyl or R3 and R4 taken together with the adjacent nitrogen form a heterocyclic residue are disclosed in a method of suppressing cardiac arrhythmias.
