1) 5-(二甲氨基甲基)环戊酮-3-羧酸盐酸盐(I)已由环戊酮-3-羧酸通过曼尼希反应合成。2) 5-(二甲氨基甲基)环戊酮-3-羧酸甲酯盐酸盐(II)已被降解为5-亚甲基环戊酮-3-羧酸甲酯(III),其已水解为5-亚甲基环戊酮-3-羧酸(IV) ,一种沙霉素的异构体。3) 已经证明了 III 和 IV 的结构。4)已发现III具有显着的抗肿瘤和抗菌活性,IV也显示出抗菌活性。
dl-Sarkomycin (2-methylenecyclopentanone-3-carboxylic acid) was synthesized in a four-stage process starting from ethyl cyclopentanone-3-carboxylate, prepared by Kay’s procedure. Namely, ethyl cyclopentanone-3-carboxylate was converted into ethyl 2-(dialkylaminomethyl)-cyclopentanone-3-carboxylate and thence to ethyl 2-methylenecyclopentanone-3-carboxylate. The ester was hydrolyzed to 2-methylenecyclopentanone-3-carboxylic acid with diluted hydrochloric acid. The final product was a pale yellow oil and was effective in inhibiting the growth of Ehrlich carcinoma of mice.
dl-Sarkomycin (2-亚甲基环戊酮-3-羧酸)是由 Kay 程序制备的环戊酮-3-羧酸乙酯开始,经过四个阶段合成的。即,环戊酮-3-羧酸乙酯转化为 2-(二烷基氨基甲基)-环戊酮-3-羧酸乙酯,然后转化为 2-亚甲基环戊酮-3-羧酸乙酯。该酯用稀盐酸水解为 2-亚甲基环戊酮-3-羧酸。最终产物为淡黄色油状物,可有效抑制小鼠艾氏癌的生长。
NOVEL COMPOUND HAVING EFFECT OF PROMOTING NEURON DIFFERENTIATION
申请人:Nippon Kayaku Kabushiki Kaisha
公开号:EP0999204A1
公开(公告)日:2000-05-10
A novel cystacycline derivative provided according to the present invention has a novel neuron differentiation promoting activity and is thus useful as a medicament for the treatment of central and peripheral nervous system disorders and the like.
METHODS OF USING (1S,3S)-3-AMINO-4-DIFLUOROMETHYLENYL-1-CYCLOPENTANOIC ACID
申请人:Silverman Richard B.
公开号:US20130041028A1
公开(公告)日:2013-02-14
(1S,3S)-3-amino-4-difluoromethylenyl-1-cyclopentanoic acid also known as CPP-115 or its pharmaceutically acceptable salts can be used to treat addiction and neurological disorders such as epilepsy without side effects such as visual field defects caused by vigabatrin (Sabril).