H. Morita et al., A NEW IMMUNOSUPPRESSIVE CYCLIC NONAPEPTIDE, CYCLOLINOPEPTIDE-B FROM LINUM-USITATISSIMUM, Bioorganic & medicinal chemistry letters, 7(10), 1997, pp. 1269-1272
A new cyclic nonapeptide, cyclolinopeptide B: cyclo (-Pro-Pro-Phe-Phe-
Val-Ile-Met-Leu-Ile-), has been isolated from the seeds of Linum usita
tissimum and its structure was elucidated by extensive 2D NMR methods
and chemical degradations. Cyclolinopeptide B showed potent immunosupp
ressive activity comparable with that of cyclosporin A. (C) 1997 Elsev
ier Science Ltd.