Abstract:
:Since pyrithiobac (PTB) is a successful commercial herbicide with very low toxicity against mammals, it is worth exploring its derivatives for an extensive study. Herein, a total of 35 novel compounds were chemically synthesized and single crystal of 6-6 was obtained to confirm the molecular structure of this family of compounds. The novel PTB derivatives were fully evaluated against various biological platforms. From the bioassay results, the best AHAS inhibitor 6-22 displayed weaker herbicidal activity but stronger anti-Candida activity than PTB did. For plant pathogenic fungi, 6-26 showed excellent activity at 50 mg/L dosage. Preliminary insecticidal activity and antiviral activity were also observed for some title compounds. Strikingly, 6-5 exhibited a promising inhibitory activity against SARS-CoV Mpro with IC50 of 4.471 μM and a low cellular cytotoxicity against mammalian 293 T cells. Based on the results of molecular modeling, HOMO-1 was considered to be a factor that affects AHAS inhibition and a possible binding mode of 6-5 with SARS-CoV Mpro was predicted. This is the first time that PTB derivatives have been studied as biological agents other than herbicides. The present research hence has suggested that more attentions should be paid to compounds belonging to this family to develop novel agrochemicals or medicines.
journal_name
Eur J Med Chemjournal_title
European journal of medicinal chemistryauthors
Wu RJ,Zhou KX,Yang H,Song GQ,Li YH,Fu JX,Zhang X,Yu SJ,Wang LZ,Xiong LX,Niu CW,Song FH,Yang H,Wang JGdoi
10.1016/j.ejmech.2019.02.002subject
Has Abstractpub_date
2019-04-01 00:00:00pages
472-484eissn
0223-5234issn
1768-3254pii
S0223-5234(19)30112-6journal_volume
167pub_type
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