Chemical and Pharmaceutical Bulletin
Online ISSN : 1347-5223
Print ISSN : 0009-2363
ISSN-L : 0009-2363
Studies on Peptides. XLVIII. Application of the Trifluoromethanesulphonic Acid Procedure to the Synthesis of Tuftsin
HARUAKI YAJIMA, HIROSHI OGAWA, HIDEHIKO WATANABE, NOBUTAKA FUJII, MASAYUKI KUROBE, SEIJI MIYAMOTO
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1975 Volume 23 Issue 2 Pages 371-374

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Abstract
Trifluoromethanesulphonic acid removed all protecting groups from Z-Thr-Lys (Z)-Pro-Arg (Tos)-OH to give the phagocytosis-stimulating tetrapeptide, H-Thr-Lys-Pro-Arg-OH, named tuftsin. To this synthesis, the 5-chloro-8-quinolyl ester procedure was applied. With this connection, a number of analogous active esters was prepared.
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© The Pharmaceutical Society of Japan
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