US 11,839,216 B1
Quinoline-2,3-fused nine-membered ring scaffold compound, and preparation method and application thereof as effective component in plant fungicide
Xiao-De An, Qingdao (CN); Jian Xiao, Qingdao (CN); Daying Shao, Qingdao (CN); and Bin Qiu, Qingdao (CN)
Assigned to QINGDAO AGRICULTURAL UNIVERSITY, Shandong (CN)
Filed by QINGDAO AGRICULTURAL UNIVERSITY, Qingdao (CN)
Filed on Feb. 8, 2023, as Appl. No. 18/166,346.
Application 18/166,346 is a continuation of application No. PCT/CN2022/018299, filed on Sep. 13, 2022.
Claims priority of application No. 202211014099.1 (CN), filed on Aug. 23, 2022; and application No. 202211017425.4 (CN), filed on Aug. 23, 2022.
Int. Cl. C07D 471/14 (2006.01); A01N 43/90 (2006.01); A01P 3/00 (2006.01)
CPC A01N 43/90 (2013.01) [A01P 3/00 (2021.08); C07D 471/14 (2013.01)] 15 Claims
 
1. A quinoline-2,3-fused nine-membered ring compound, structurally shown as follows:

OG Complex Work Unit Chemistry
where:
R1 is selected from benzyl, p-cyanobenzyl, p-trifluoromethylbenzyl, o-aldehydebenzyl, p-chlorobenzyl, m-methylbenzyl, 2-fluoro-4-chlorobenzyl, p-methoxybenzyl, furylmethyl, thenyl or menaphthyl;
R2 is located at any feasible position of this benzene ring, and selected from halogen, phenyl, methyl or methoxy; and
R3 is located at any feasible position of this benzene ring, and selected from halogen, trifluoromethyl or methoxy.