通过用α-D-吡喃葡萄糖基,α-D-吡喃半乳糖基和α-D对3-甲基-2-氧代(thioxo)-1,2-二氢喹喔啉1a,b进行糖基化制备了几种O-和S-喹喔啉苷。-在K 2 CO 3存在下用β-乳糖苷溴化物,然后用Et 3 N / H 2 O脱乙酰基。此外,用乙酸4-溴丁酯,2-乙酰氧基乙氧基甲基溴和3-氯丙醇将1a,b烷基化,得到相应的O-和S-acycloquinoxaline核苷。的反应1B与氯乙酸随后用磺胺醋酰磺胺嘧啶和缩合的Et的存在3N / THF和氯甲酸乙酯分别得到相应的磺酰胺衍生物14和15。新化合物的结构通过IR,1 H,13 C NMR光谱和微量分析证实。在体外筛选了其中一些化合物的抗肿瘤和抗真菌活性。
Reaction of Quinoxaline Derivatives with Nucleophilic Reagents
作者:Mahmoud Zarif Amin Badr、Galal Mohamed El-Naggar、Hassan Ahmad Hassan El-Sherief、Abdou El-Sayed Abdel-Rahman、Moustafa Fouzy Aly
DOI:10.1246/bcsj.56.326
日期:1983.1
3-methyl-2(1H)-quinoxalinone condenses with aromatic aldehydes forming the corresponding 3-(substituted styryl)-2(1H)-quinoxalinones which add bromine in acetic acid to yield the corresponding dibromo derivatives which react with morpholine, sodium methoxide, and piperidine to give the corresponding compounds. 3-Methyl-2(1H)-quinoxalinone undergoes side-chain bromination to yield 3-bromomethyl-2(1H)-quinoxalinone