1986 年 39 巻 10 号 p. 1378-1381
The structures of propioxatins A (C17H29N3O6) and B (C18H31N3O6), new enkephalinase B inhibitors produced by Kitasatosporia setae SANK 60684, were determined. Both propioxatins consist of N-acyl-L-prolyl-L-valine. N-Acyl moieties of propioxatins A and B were α-propyl and α-isobutyl succinic acid β-hydroxamic acid, respectively.