The amino blocking reagent 1-isopropyl-3-ethoxy-4-nitro-2-oxo-3-pyrroline and the N-hydroxysuccinimide esters of N-(1-cyclohexyl- and 1-isopropyl-4-nitro-2-oxo-3-pyrrolin-3-yl)glycine. Reagents for the introduction of N-glycyl residues
Substituted 3-pyrroline-2-one amino blocking reagents and intermediates
申请人:——
公开号:US04739076A1
公开(公告)日:1988-04-19
An amino blocking reagent, 1-isopropyl-3-ethoxy-4-nitro-2-oxo-3-pyrroline has been obtained. The new reagent is water soluble. It has yielded an N-protected glycine active ester with solubiity appropriate for reaction with both peptides and proteins. N-hydroxysuccinimide esters of N-i-NOPY- and N-c-NOPY-glycines were prepared. The N-hydroxysuccinimide active esters were produced by treatment with dicyclohexylcarbodimide (DCC) and N-hydroxysuccinimide in tetrahydrofuran (THF). The new reagents for glycine attachment are stable crystalline compounds. These active esters were used to attach glycine residues to a dipeptide and a protein by the salt-coupling procedure.
The amino blocking reagent 1-isopropyl-3-ethoxy-4-nitro-2-oxo-3-pyrroline and the N-hydroxysuccinimide esters of N-(1-cyclohexyl- and 1-isopropyl-4-nitro-2-oxo-3-pyrrolin-3-yl)glycine. Reagents for the introduction of N-glycyl residues
作者:Philip L. Southwick、George K. Chin、Mark A. Koshute、James R. Miller、Kimberly E. Niemela、Cheryl A. Siegel、Robert T. Nolte、William E. Brown