A mild and efficient one pot synthesis of 1,3,4-oxadiazoles from carboxylic acids and acyl hydrazides
作者:Hemaka A. Rajapakse、Hong Zhu、Mary Beth Young、Bryan T. Mott
DOI:10.1016/j.tetlet.2006.05.051
日期:2006.7
A convenient one pot method for the synthesis of 2,5-disubstituted 1,3,4-oxadiazoles fromacids and acyl hydrazides is reported. Acid activation with CDI, followed by coupling with the desired acylhydrazide and dehydration in the same pot with Ph3P and CBr4 affords the corresponding 1,3,4-oxadiazoles in good yield. The scope of the acid and acylhydrazide components is presented.
Robust preparation of novel imidazo[5,1-b][1,3,4]oxadiazoles
作者:Tuan P. Tran、Nandini Patel、Brian Samas、Jacob B. Schwarz
DOI:10.1039/b916188k
日期:——
Cyclodehydration of amino acid-derived acyl hydrazide amides 2 to the corresponding oxadiazoles was followed by a second dehydration event, smoothly furnishing the novel imidazo[5,1-b][1,3,4]oxadiazole motif 1.
氨基酸衍生的酰肼酰胺2的环脱水作用生成相应的恶二唑,随后发生第二次脱水事件,从而为新型咪唑并[5,1- b ] [1,3,4]恶二唑主题1。
N-CARBOXYALKYL-AURISTATIN AND THE USE THEREOF
申请人:Lerchen Hans-Georg
公开号:US20130261064A1
公开(公告)日:2013-10-03
The present application relates to new derivatives of monomethylauristatin F, substituted on the N terminus by a carboxyalkyl group, processes for preparing these derivatives, their use for the treatment and/or prevention of diseases and to produce medication for the treatment and/or prevention of diseases, particularly hyperproliferative and/or angiogenic disorders such as cancer disorders, for example. Such treatments can occur as monotherapies or in combination with other medication or further therapeutic measures.
The present application relates to new derivatives of monomethylauristatin F, substituted on the N terminus by a carboxyalkyl group, processes for preparing these derivatives, their use for the treatment and/or prevention of diseases and to produce medication for the treatment and/or prevention of diseases, particularly hyperproliferative and/or angiogenic disorders such as cancer disorders, for example. Such treatments can occur as monotherapies or in combination with other medication or further therapeutic measures.
The present application relates to new derivatives of monomethylauristatin F, substituted on the N terminus by a carboxyalkyl group, processes for preparing these derivatives, their use for the treatment and/or prevention of diseases and to produce medication for the treatment and/or prevention of diseases, particularly hyperproliferative and/or angiogenic disorders such as cancer disorders, for example. Such treatments can occur as monotherapies or in combination with other medication or further therapeutic measures.