Directions of reactions of 6-amino-, -acetylamino-, and -benzoylaminodeoxyvasicinones with aldehydes
作者:B. Zh. Elmuradov、A. Sh. Abdurazakov、Kh. M. Shakhidoyatov
DOI:10.1007/s10600-010-9583-8
日期:2010.5
6-Acetylamino- and -benzoylamino-9-arylidenedeoxyvasicinones were synthesized by reaction of 6-amino(3), -acetylamino- (4), and -benzoylamino- (5) -deoxyvasicinones (DOV) with aromatic aldehydes and furfurol in glacial acetic acid. It was shown that the amino group of 6-aminodeoxyvasicinone underwent acylation upon reaction with aldehydes to form 6-acetylamino-DOV, which reacted with aldehydes to form 9-arylidene derivatives. Carrying out this condensation in toluene, o-xylene, and ethanol produced a mixture of condensation products at the 6-amino-and a-CH2-groups. It was found that condensati on of 3 with 4-nitrobenzaldehyde in pyridine formed exclusively the Schiff bases. Methods for preparing 6-nitrodeoxyvasicinone and for its reduction were improved.
通过 6-氨基(3)、-乙酰氨基-(4)和-苯甲酰基氨基-(5)-脱氧鸭嘴花碱酮(DOV)与芳香醛和糠醇在冰醋酸中的反应,合成了 6-乙酰氨基和-苯甲酰基氨基-9-芳基二脱氧鸭嘴花碱酮。研究表明,6-氨基脱氧鸭嘴花碱酮的氨基在与醛反应后发生酰化,生成 6-乙酰氨基-DOV,后者与醛反应生成 9-芳基衍生物。在甲苯、邻二甲苯和乙醇中进行这种缩合反应,会在 6-氨基和 a-CH2 基团上产生混合缩合产物。研究发现,3 与 4-硝基苯甲醛在吡啶中缩合只形成希夫碱。制备 6-硝基脱氧鸭嘴花碱酮及其还原的方法也得到了改进。