Design, synthesis and agricultural evaluation of derivatives of N-Acyl-N-(m-fluoro-benzyl)-6-amino-coumarin.

Abstract:

:ABTRACT This study aims to design and synthesize a series of N-Acyl-N-(m-fluoro- benzyl)-6- amino-coumarins through the principle of active substructure stitching, which are based on the core structure of N-(m-fluoro-benzyl)-6-amino-coumarin. The structures of target compounds e1-e25 have been characterized by 1H NMR, 13C NMR, ESI-MS and elemental analysis. Meanwhile, their agricultural activity have been evaluated in two weeds (Amaranth and Crabgrass) and four widespread noxious pathogens (V.mali, B.cinerea, F.axysporium and C.bacteria). The herbicidal activity results showed that almost all synthetic molecules have a greater impact on the stem system than on the root. Excellent inhibition rates were discovered from compounds e2-e5 and e20-e23 against Amaranth on stems, which were above 58%(20 mg/L), 68%(100 mg/L) respectively. Compounds e2 and e21 also exhibited striking inhibition on stems growth of both weeds. Anti-pathogenic activity showed that all the compounds exerted a better inhibitory activity on B.cinerea at 20 ppm compared to control carbendazim. All the heterocyclic substituted compounds (e17-e24, >57%) made a better influence than the control (54.1%) at the100 ppm. This research provides promising herbicidal and anti-pathogenic agents that have the better effects and can be potential for further development.

journal_name

Nat Prod Res

journal_title

Natural product research

authors

Jin Y,Ding YH,Dong JJ,Wei Y,Hao SH,Feng BC

doi

10.1080/14786419.2020.1806268

subject

Has Abstract

pub_date

2020-08-13 00:00:00

pages

1-7

eissn

1478-6419

issn

1478-6427

pub_type

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