F. Artuso et al., KAINIC ACID AS CONFORMATIONALLY CONSTRAINED GLUTAMIC-ACID ANALOG IN PEPTIDE-SYNTHESIS, Tetrahedron letters, 36(51), 1995, pp. 9309-9312
A synthetic protocol is described which allows the incorporation of th
e gamma-amide (Kan) and the gamma-benzyl ester [Kai(Bzl)] and ether [K
ol(Bzl)] of kainic acid (Kai) into peptide chains as exemplified with
the synthesis of the substance P (SP) analogs [Kan(5)]-SP5-11, [Glp(5)
, Kan(6)]-SP5-11, [Kan(6)]-SP6-11, [Glp(5), Kai(Bzl)(11)]-SP5-11 and [
Glp(5), Kol(Bzl)(11)]-SP5-11.