New diketopiperazines from the sponge Dysidea chlorea.
Twelve new polychlorinated diketopiperazines (7-18), along with six known ones (1-6) and a known sterol (19), were isolated from the sponge Dysidea chlorea, collected from Yap, Federated States of Micronesia. The structures of dysamides I-T (7-18) were elucidated by spectroscopic methods, and one (8) was confirmed by chemical conversion. The stereochemistry of the dysamides is discussed.
Department of Chemistry and Biochemistry, University of Oklahoma, Norman, Oklahoma 73019, Zealand, USA.
X
X
Fu
M L
ML
Ferreira
F J
FJ
Schmitz
M
M
Kelly-Borges
D000818:Animals; D015394:Molecular Structure; D010879:Piperazines / Q000737:chemistry / Q000302:isolation & purification*; D011161:Porifera / Q000737:chemistry*
D010879:Piperazines