... Download full text in PDF. Tetrahedron Letters,Vo1.23,No.43,pp 4439-4442,1982 0040-4039/82/434439-04$03.00/0 ... reaction mixture was stirred for an additional 1-3 h. The solution was reduced to a small volume by evaporation ... 1. M. Mutter and E. Bayer, in "The Peptides", Vol. ...