Online article for Non-subscribers

Pay per view

Heterocycles has a pay-per-view service for Non-subscribers.
You will be able to directly purchase the full text article through PayPal.
Your purchased Paper can be downloaded after the payment is completed.
An e-mail will be sent the URL to download the paper.
If you have any questions, please contact:

Price: ¥ 4,400 (Yen only)
Period: This Article can be accessed for 7 days.

Paper | Regular issue | Vol 102, No. 9, 2021, pp.1743-1766
Published online, 17th June, 2021
DOI: 10.3987/COM-21-14496
Natural Osthole-Based Ester Derivatives as Potential Fungicidal Agents: Design, Synthesis and Quantitative Structure-Activity Relationship (QSAR)

Yong-Ling Wu,* Yong Yan, Tin-Tin Pan, and Dou-dou Wang

*College of Biology Pharmacy and Food Engineering, Shangluo University, Shangluo 726000, Shaanxi, China


Turning potential natural products into value-added fungicides is a bioactivity-guided mixed synthesis method. Thirty-two derivatives were designed and synthesized to improve the potential use of the osthole, a natural coumarin pharmacophore. Compound Os14 with 3-ClPh showed a high in vitro and in vivo antifungal activity than other derivatives. The preliminary structure-activity relationships (SARs) demonstrated that compounds with a short aliphatic chain or electron-withdrawing groups on phenyl ring would have more desirable potency. Meanwhile, the quantitative structure-activity relationship (QSAR) model (R2 = 0.928, F = 83.54, S2 = 0.0042) were performed using Gaussian and CODESSA software with optimal conformers and heuristic regression analysis, which revealed a correlation of antifungal activity and molecular structures. Thus, these results laid the foundation for further design of improved crop-protection agents based on osthole scaffold.