DEPBT as Coupling Reagent To Avoid Racemization in a Solution-Phase Synthesis of a Kyotorphin Derivative
摘要:
The synthesis of IbKTP-NH2 with reduction of racemization up to no detectable level has been achieved using 3-(diethoxyphosphoryloxy)-1,2,3-benzotriazin-4(3H)-one (DEPBT). Among all coupling systems tested, only DEPBT-mediated amide bond formation between N-alpha-acylated tyrosine and arginine without loss of optical purity.