A synthesis of 3-amino-4-hydroxyquinolin-2(1H)-one derivatives via oxazolo[4,5-c]quinolin-4(5H)-ones.
                                
                                    
                                        作者:MAMORU SUZUKI、KAZUO MATSUMOTO、MUNEJI MIYOSHI、NAOTO YONEDA、RYUICHI ISHIDA                                    
                                    
                                        DOI:10.1248/cpb.25.2602
                                    
                                    
                                        日期:——
                                    
                                    3-Amino-4-hydroxyquinolin-2 (1H)-one compounds (aminocarbostyrils) were synthesized by a reaction of methyl isocyanoacetate with isatoic anhydrides in the presence of 1, 8-diazabicyclo [5, 4, 0] undec-7-ene (DBU), followed by hydrolysis with HCl. The alkylation of oxazolo [4, 5-c] quinolin-4 (5H)-ones which are the intermediates of the aminocarbostyrils and the acylation of aminocarbostyrils were also investigated. Furthermore, a variety of the quinolin-2 (1H)-one analogs showed antiallergic activity.
                                    在 1, 8-二
氮杂双环 [5, 4, 0] 十一-7-烯 (
DBU) 存在下,通过
异氰基乙酸甲酯与异酸酐反应,然后用
盐酸水解,合成了 3-
氨基-
4-羟基喹啉-2 (1H) -酮化合物(
氨基卡波
胆碱)。此外,还研究了
恶唑并 [4, 5-c] 
喹啉-4 (5H)- 酮(
氨基卡波
胆碱的中间体)的烷基化以及
氨基卡波
胆碱的酰化。此外,多种
喹啉-2 (1H)-
酮类似物显示出抗过敏活性。