A New Diketopiperazine, Cyclo-(4-S-hydroxy-R-proline-R-isoleucine), from an Australian Specimen of the Sponge Stelletta sp.
oleh: Dianne M. Tapiolas, Anthony D. Wright, Cherie A. Motti, Richard H. Willis, Catherine H. Liptrot, Simon P. B. Ovenden, Jonathan L. Nielson
| Format: | Article |
|---|---|
| Diterbitkan: | MDPI AG 2011-11-01 |
Deskripsi
While investigating the cytotoxic activity of the methanol extract of an Australian marine sponge Stelletta sp. (Demospongiae), a new diketopiperazine, cyclo-(4-S-hydroxy-R-proline-R-isoleucine) (1), was isolated together with the known bengamides; A (2), F (3), N (4), Y (5), and bengazoles; Z (6), C4 (7) and C6 (8). The isolation and structure elucidation of the diketopiperazine (1), together with the activity of 1–8 against a panel of human and mammalian cell lines are discussed.