Ring Cleavage of<i>N</i>-Acyl- and<i>N</i>-(Arylsulfonyl)histamines with Di-<i>tert</i>-butyl Dicarbonate. A One-Pot Synthesis of 4-Acylamino- and 4-Arylsulfonylamino-1,2-diaminobutanes
作者:A. Warshawsky、J. Altman、N. Kahana、R. Arad-Yellin、A. Deshe、H. Hasson、N. Shoef、H. Gottlieb
DOI:10.1055/s-1989-27402
日期:——
The ring cleavage of N-aryl- and N-(arylsulfonyl)histamines with di-tert-butyl dicarbonate in aqueous acetonitrile containing KOAc provides a one-pot synthesis of 4-acylamino- or 4-arylsulfonylamino-1,2-bis(tert -butoxycarbonylamino)butanes. Removal of the Boc groups in these protected triamines with trifluoroacetic acid or dry HCl in MeOH, followed by alkylation with benzyl bromoacetate, and then hydrogenation leads to N 4-acyl-1,2,4-butanetriamine -N 1,N 1,N 2,N 2 -tetraacetic acids and the N 4-arylsulfonyl analogs, respectively.
N-芳基和N-(芳基磺酰基)组胺与二叔丁基二碳酸酯在含有醋酸钾的水相乙腈中反应,提供了一种一步合成4-酰氨基或4-芳基磺酰氨基-1,2-双(叔丁氧基碳酰氨基)丁烷的方法。随后用三氟乙酸或干氯化氢在甲醇中去除这些保护的三胺中的Boc基团,再进行苄基溴乙酸的烷基化,最后进行氢化,分别得到N-4-酰基-1,2,4-丁三胺-N-1,N-1,N-2,N-2-四乙酸和N-4-芳基磺酰基类似物。