367968-06-7Relevant articles and documents
Structure-Activity Relationships for the Marine Natural Product Sintokamides: Androgen Receptor N-Terminus Antagonists of Interest for Treatment of Metastatic Castration-Resistant Prostate Cancer
Yan, Luping,Banuelos, Carmen A.,Mawji, Nasrin R.,Patrick, Brian O.,Sadar, Marianne D.,Andersen, Raymond J.
, p. 797 - 813 (2020/11/13)
Synthetic analogues of the marine natural product sintokamides have been prepared in order to investigate the structure-activity relationships for the androgen receptor N-terminal domain (AR NTD) antagonist activity of the sintokamide scaffold. An in vitro LNCaP cell-based transcriptional activity assay with an androgen-driven luciferase (Luc) reporter was used to monitor the potency of analogues. The data have shown that the chlorine atoms on the leucine side chains are essential for potent activity. Analogues missing the nonchlorinated methyl groups of the leucine side chains (C-1 and C-17) are just as active and in some cases more active than the natural products. Analogues with the natural R configuration at C-10 and the unnatural R configuration at C-4 are most potent. Replacing the natural propionamide N-terminus cap with the more sterically hindered pivaloylamide N-terminus cap leads to enhanced potency. The tetramic acid fragment and the methyl ether on the tetramic acid fragment are essential for activity. The SAR optimized analogue 76 is more selective, easier to synthesize, more potent, and presumed to be more resistant to proteolysis than the natural sintokamides.
HERBICIDAL COMPOSITIONS
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, (2020/08/28)
The present invention relates novel herbicidal combinations and their use in controlling plants or inhibiting plant growth. In particular, herbicidal combinations of the invention comprise at least one pyridazine derivative as defined herein, in combination with at least one futher herbicide that is an acetoclactase synthase (ALS) inhibitor.
HERBICIDAL COMPOSITIONS
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, (2020/08/28)
The present invention relates to novel herbicidal combinations and their use in controlling plants or inhibiting plant growth. In particular, herbicidal combinations of the invention comprise at least one pyridazine derivative of Formula (I), in combination with at least one futher herbicide that is a non-selective herbicide, a herbicide that acts through the inhibition of protoporphoryinogen oxidase, or a herbicide that inhibits photosystem II in photosynthesis.