Goswami, K.; Paul, S.; Bugde, S.T.; Sinha, S.
(Tetrahedron. 68(1); 2012; 280-286.)
D-Homotryptophan and its sulfur analogue have been synthesized by Sonogashira coupling between 3-iodoheteroarenes and ethynyloxazolidine followed by reduction of triple bond and oxidation of alcohol to acid. L-Homotryptophan ...