(E)-4-オキソ-4-(3,4,5-トリメトキシフェニル)-2-ブテン酸

(E)-4-オキソ-4-(3,4,5-トリメトキシフェニル)-2-ブテン酸 化学特性,用途語,生産方法

• Originator

  Baxitozine,ZYF Pharm Chemical

• Manufacturing Process

  29.6 g of glyoxylic acid of 50% by weight are heated in water under reduced pressure until elimination of 80% of the water present, whereupon, after cooling, 84.1 g of 3,4,5-trimethoxy acetophenone are introduced into the reaction mixture. Heating is effected for 2 h at 95°-100°C under reduced pressure (about 50 mm/Hg), at the same time distilling off the residual water present.
  After cooling of the medium, 120 ml of water containing 11.6 g of sodium carbonate and ether are introduced, the aqueous phase is decanted and washed with : ether, whereupon the aqueous phase is acidified to a pH of 1 with 50% hydrochloric acid. The desired product is extracted with ethyl acetate. After elimination of the extraction solvent 31.5 g of the 4-(3,4,5- trimethoxyphenyl)-4-oxo-2-hydroxy butanoic acid, melting point 119°-120° are obtained (recrystallization from 1,2-dichloroethane).
  15.8 g of 4-(3,4,5-trimethoxyphenyl)-4-oxo-2-hydroxy butanoic acid, 20 ml of acetic acid and 20 ml of concentrated hydrochloric acid (d-1.18) are heated for 2.5 h under reflux. The reaction medium is cooled and precipitated by water. The precipitate formed is filtered off. 10.5 g of the (E)-4-(3,4,5- trimethoxyphenyl)-4-oxo-2-butenoic acid, melting point 140°C are obtained (recrystallization from ethanol-water 1:1).

• Therapeutic Function

  Gastric cytoprotective; Antiulcer

(E)-4-オキソ-4-(3,4,5-トリメトキシフェニル)-2-ブテン酸 上流と下流の製品情報

(E)-4-オキソ-4-(3,4,5-トリメトキシフェニル)-2-ブテン酸 生産企業

Global(2)Suppliers

84386-11-8, (E)-4-オキソ-4-(3,4,5-トリメトキシフェニル)-2-ブテン酸 キーワード