申请人:ELI LILLY AND COMPANY
公开号:EP0244075A1
公开(公告)日:1987-11-04
Pollen formation in cereal grain plants is inhibited by application of a 4,5-dicarboxy or 5-carboxamido-4-carboxy (or derivatized carboxy)-1-(3,5-disubstituted-phenyl)pyrazole.
Use of the compounds facilitates the production of hybrid seed.
wherein
R and R¹ independently represent chloro, bromo or C₁-C₄ alkyl,
R² is hydroxy, C₁-C₄ alkoxy, C₃-C₄ alkenyloxy, C₃-C₄ alkynyloxy, or a phytologically-acceptable moiety forming a salt of the carboxylic acid;
or R² and R³ taken together represent -NH- so as to form an imide;
R³ is NH₂, hydroxy, or a phytologically-acceptable moiety forming a salt of the carboxylic acid;
provided that R³ is NH₂ when R² is alkoxy, alkenyloxy or alkynyloxy and that R² and R³ are the same when R³ is other than NH₂.
施用 4,5-二羧基或 5-羧基-4-羧基(或衍生羧基)-1-(3,5-二取代苯基)吡唑可抑制谷类植物花粉的形成。
使用这些化合物有利于杂交种子的生产。
其中
R 和 R¹ 独立地代表氯、溴或 C₁-C₄ 烷基、
R² 是羟基、C₁-C₄ 烷氧基、C₃-C₄ 烯氧基、C₃-C₄ 烷炔氧基或植物学上可接受的形成羧酸盐的分子;
或 R² 和 R³ 共同代表-NH-,从而形成亚胺;
R³ 是 NH₂、羟基或形成羧酸盐的植物学上可接受的分子;
当 R² 为烷氧基、烯氧基或炔氧基时,R³ 为 NH₂;当 R³ 不是 NH₂ 时,R² 和 R³ 相同。