Pemuchiamides A and B, Proline-Rich Linear Lipopeptides, Isolated from a Marine sp. Cyanobacterium.

Pemuchiamides A and B ( and ) were isolated from a marine sp. cyanobacterium collected from Pemuchi Beach on Hateruma Island, Japan. Although and existed as a complex mixture of rotamers in chloroform-, detailed analyses of their 2D NMR and tandem mass spectra revealed their planar structures, respectively.