title: New azacyclopropene derivatives from Dysidea fragilis collected in Pohnpei.
abstract: The sponge Dysidea fragilis from Pohnpei contained four azacyclopropene derivatives, (4E)-S-dysidazirine [2], which is the optical enantiomer of the known compound dysidazirine [1], (4Z)-dysidazirine [3], (4E)-S-antazirine [4], and (4Z)-antazirine [5]. The structures of the new compounds were elucidated by interpretation of spectral data.
mesh_terms: D000818:Animals; D001389:Azirines / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D011161:Porifera / Q000737:chemistry*; D013237:Stereoisomerism
chemical_list: D001389:Azirines; C096952:dysidazirine; C096953:antazirine