作者:Sheng-Lou Deng、Isabelle Baglin、Mohammed Nour、Christian Cavé
DOI:10.1002/hc.20396
日期:2008.1
anhydride with glycine or β-alanine, chlorination of N-blocked amino acids, coupling of acid chloride with α-aminophosphonates and sequential hydrazinolysis. Finally, new classes of phosphonodipeptide conjugates of ursolic acid and their homologs were obtained by condensation of 3β-acetoxy-urs-12-en-28-oyl chloride with phosphonodipeptides and their homologs. © 2008 Wiley Periodicals, Inc. Heteroatom Chem
为了制备具有不寻常性质和广谱活性的天然生物活性 3β-羟基-urs-12-en-28-oic酸(熊果酸)的新型衍生物,进行了许多化学反应。首先,以三组分曼尼希型反应为关键步骤,通过一系列反应制备了多种α-氨基膦酸酯。其次,通过多步反应合成了一系列膦酰二肽及其同系物,包括邻苯二甲酸酐与甘氨酸或β-丙氨酸的缩合、N-封闭氨基酸的氯化、酰氯与α-氨基膦酸酯的偶联和连续肼解。最后,通过 3β-乙酰氧基-urs-12-en-28-oyl 氯与膦酰二肽及其同系物的缩合,获得了新类别的熊果酸及其同系物的膦酰二肽缀合物。© 2008 Wiley Periodicals, Inc. 杂原子化学 19:55–65, 2008; 在线发表于 Wiley InterScience (www.interscience.wiley.com)。DOI 10.1002/hc.20396