An insight into the conformation of ptilomycalin A. the NMR properties of trifluoroacetylated spermidine analogues
作者:Ikuko Ohtani、Takenori Kusumi、Hiroshi Kakisawa
DOI:10.1016/s0040-4039(00)92232-9
日期:1992.4
The conformation of the bis(trifluoroacetyl) derivative of ptilomycalin A (1), a biologically active marine alkaloid, has been deduced from analyzing the NMR properties of the trifluoroacetyl derivatives of spermidine and its analogues.
Structure and chemical properties of ptilomycalin A
The structure of ptilomycalin A (1), a marinealkaloid possessing potent antiviral and antibiotic activites, has been determined on the basis of NMR analyses of its trifluoroacetyl (TFA) derivative (2). It has a unique structure consisting of a polycyclicguanidine and a spermidine group, each of which is linked to a 16-hydroxyhexadecanoic acid moiety. The rotational isomerism of the acylated sperimidine