Ile was completely dissolved in 0.2 N HCl to final concentration of 1 M and then equimolar TR was added at 100℃ in an oil bath under bubbling with N_2 gas. The reaction mixture was kept for 45 min under the same conditions. The product was separated as crystals. The yield was 29.8%. It was confirmed that the crystals were condensation product of TR and Ile by estimating elemental composition, melting point, paper chromatogram, UV, IR, Mass and NMR spectra.