496930-00-8Relevant academic research and scientific papers
Preparation of 7-halo-indoles by thallation of N-formylindoline and their attempted use for synthesis of the right-hand segment of chloropeptin
Yamada, Yaeko,Arima, Shiho,Okada, Chiharu,Akiba, Ai,Kai, Toshitsugu,Harigaya, Yoshihiro
, p. 788 - 794 (2007/10/03)
7-Substituted (Cl, Br, I) indoles were synthesized by using thallation of N-formylindoline as a key reaction. Two precursor tripeptides for the right-hand segment of chloropeptin were synthesized by using (R)-7′-iodo and 7′-bromotryptophans derived from each 7-substituted indole (I, Br) obtained by the above procedure.
Convenient synthesis of 7′ and 6′-bromo-D-tryptophan and their derivatives by enzymatic optical resolution using D-aminoacylase
Konda-Yamada, Yaeko,Okada, Chiharu,Yoshida, Kiminari,Umeda, Yasuyuki,Arima, Shiho,Sato, Noriko,Kai, Toshitsugu,Takayanagi, Hiroaki,Harigaya, Yoshihiro
, p. 7851 - 7861 (2007/10/03)
Compounds 7′ and 6′-bromo-D-tryptophan (1 and 2) which are important derivatives for the synthesis of the chloropeptin and kistamycin A, respectively, were conveniently synthesized by optical resolution from N-acetyl-7′ and 6′-bromo-DL-tryptophan ((RS)-5 and (RS)-14) using D-aminoacylase.
