申请人:Teijin Limited
公开号:US04711895A1
公开(公告)日:1987-12-08
A 4-hydroxy-2-cyclopentenone represented by the following formula (I) ##STR1## wherein X represents a hydrogen or halogen atom, A represents a hydrogen atom and B represents a hydroxyl group, or A and B are bonded to each other to represent a bond, R.sup.1 represents a substituted or unsubstituted alkyl, alkenyl or alkynyl group having 1 to 10 carbon atoms, R.sup.2 represents a substituted or unsubstituted alkyl, alkenyl or alkynyl group having 1 to 10 carbon atoms, and R.sup.3 represents a hydrogen atom or a protective group for a hydroxyl group, provided that R.sup.2 is not a 2-octenyl, 8-acetoxy-2-octenyl or 2,5-octadienyl group. The compounds of formula (I) in which A is hydrogen and B is hydroxyl group are prepared by subjecting a 5-unsubstituted cyclopentenone and an aldehyde to aldol condensation reaction. The compounds of formula (I) in which A and B form a bond is prepared by subjecting the compounds of the formula (I) in which A is hydrogen and B is hydroxyl group to dehydration. The compounds (I) are useful for treatment of malignant tumors.
以下式(I)所表示的4-羟基-2-环戊烯酮:##STR1## 其中,X代表氢原子或卤素原子,A代表氢原子,B代表羟基基团,或A和B相互结合形成键,R1代表具有1到10个碳原子的取代或未取代的烷基,烯基或炔基,R2代表具有1到10个碳原子的取代或未取代的烷基,烯基或炔基,R3代表氢原子或羟基的保护基团,但R2不是2-辛烯基,8-乙酰氧基-2-辛烯基或2,5-辛二烯基。其中A为氢原子,B为羟基基团的式(I)化合物通过将5-未取代的环戊酮和醛进行醛缩反应制备。其中A和B形成键的式(I)化合物通过将A为氢原子和B为羟基基团的式(I)化合物脱水制备。这些化合物(I)用于治疗恶性肿瘤。