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Plexaura homomalla

While little biosynthetic information is available, it has been suggested [38] that 25 and 26 may be formed from AA (24) and EPA (14) via a cyclization mechanism (Scheme 3) similar to that which forms trans-cyclopropyl-containing diol 28 upon treatment of linoleic acid with performic acid [40]. An alternative biogenetic mechanism (Scheme 4), based upon that proposed for the structurally related red algal metabolites constanolactone A and B [41], would involve the formation and opening of an allylic epoxide intermediate created as a result of a 15-/ -LPO acting on either AA or EPA. Related compounds have been isolated from the coral Plexaura homomalla and the mollusc Aplysia kurodai (see below). [Pg.131]

Scheme 9. Biosynthetic and non-biosynthetic transformations of 8S-hydroperoxy-15Jf-hydroxyeicosatetraenoic acid (87) by Plexaura homomalla preparations [94]... Scheme 9. Biosynthetic and non-biosynthetic transformations of 8S-hydroperoxy-15Jf-hydroxyeicosatetraenoic acid (87) by Plexaura homomalla preparations [94]...
Bayer FM, Weinheimer AJ (eds) (1974) Prostaglandins from Plexaura homomalla Ecology, utilization and conservation of a major medical marine resource. A symposium. University of Miami Press, Florida... [Pg.181]

Weinheimer, A. J. and Spraggins, R. L., The occurrence of two new prostaglandin derivatives (15-epi-PGA2 and its acetate, methyl ester) in the gorgonian Plexaura homomalla. Chemistry of coelenterates XV, Tetrahedron Lett., 5185, 1969. [Pg.24]

Gerhart, D. J., Prostaglandin A2 in the Caribbean gorgonian Plexaura homomalla evidence against allelopathic and antifouling roles, Biochem. Syst. Ecol., 14, 417, 1986. [Pg.110]

Caribbean gorgonian coral Plexaura homomalla, Mar Ecol. Prog. Ser., 52, 95, 1989. [Pg.110]

The gorgonian coral Plexaura homomalla is a source of prostaglandin A2. This compound can be converted to medically useful prostaglandins that regulate mammalian reproduction, blood pressure, and digestion. [Pg.1214]

A particularly interesting finding has been the discovery of 15-R PGA2 in the Gorgonian (Plexaura homomalla), a species of coral found in the... [Pg.323]

Cover Illustration Caribbean sea whip Plexaura homomalla) (courtesy of Dr. Gary Williams, California Academy of Sciences) and the formula of prostaglandin PGE2... [Pg.835]

A research group from The Upjohn Company has recently disclosed the conversion of prostaglandins derived from the marine organism Plexaura homomalla to PGF and PGEa methyl ester. Conversion of 15(r)-PGA2 acetate methyl ester 3, isolated from Plexaura homomalla in 1.3 yield °... [Pg.139]

See other pages where Plexaura homomalla is mentioned: [Pg.163]    [Pg.84]    [Pg.121]    [Pg.124]    [Pg.132]    [Pg.134]    [Pg.134]    [Pg.134]    [Pg.141]    [Pg.141]    [Pg.164]    [Pg.166]    [Pg.175]    [Pg.158]    [Pg.54]    [Pg.91]    [Pg.1214]    [Pg.141]    [Pg.205]    [Pg.302]    [Pg.332]    [Pg.517]    [Pg.517]    [Pg.1213]    [Pg.140]    [Pg.713]    [Pg.140]   
See also in sourсe #XX -- [ Pg.54 ]

See also in sourсe #XX -- [ Pg.91 ]

See also in sourсe #XX -- [ Pg.9 , Pg.570 ]

See also in sourсe #XX -- [ Pg.9 , Pg.570 ]

See also in sourсe #XX -- [ Pg.99 , Pg.100 , Pg.105 , Pg.107 ]

See also in sourсe #XX -- [ Pg.169 ]

See also in sourсe #XX -- [ Pg.248 ]



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