Indian Journal of Chemistry Vol ... Experimental Section All chemicals and HPLC solvents were purchased from Merck (India) and amino acids, TFA, thioanisole and DCC from Sigma ... M, Nagaraj R & Pillai VNR , Tetrahedron, 50, 1994, 668 1. 5 Pillai VNR & Mathew 8, Indian 1 Tech ...