New S-protection from known N-protection: thio esters of N-urethanyl-N-methyl-. gamma.-aminobutyric acid as a class of protective groups for thiols in peptide …
NG Galakatos, DS Kemp
文献索引：Galakatos, Nicholas G.; Kemp, D. S. Journal of Organic Chemistry, 1985 , vol. 50, # 8 p. 1302 - 1304
Di-tert-butyl dicarbonate (Boc20) was purchased from Fluka and benzyltrimethyhonium methoxide (40% in MeOH) from Sigma; 2-p-biphenylyl-2-propyl phenyl carbonate, 14 4- mercaptodibenz~ furan,~~ and Nu-(benzyloxycarbonyl)-L-cysteine methyl ester (ZCysOMe)'s were prepared according to literature procedurea. N-methylpyrrolidone (NMP) and dicyclohexylcarbodiimide (DCC) were distilled under reduced pressure and stored at ...
