Hawaiian marine algae

A recent X-ray crystallographic study has resulted in a revised structure (98) for nidifocene, a minor metabolite of the Hawaiian marine alga Laurencia nidifica. In the previous structure (Vol. 7, p. 69) the positions of chlorine and bromine were reversed. An extension of previous work on the non-enzymic biogenetic cyclization of geranyl and farnesyl diphenylphosphates has shown that (Z)-monocyclo-farnesyl diethylphosphate (99) can be converted into ( )-a-chamigrene (100) in... 

Of biosynthetic interest is the reported isolation of the alcohols (19) and (20) from the Hawaiian marine alga Laurencia nidifica. Compounds of this type have previously been isolated from other marine organisms cf. Vol. 5, p, 91 Vol. 6, p. 93)... 

Laurencia species found off the coast of Australia and it may be of biosynthetic significance that the bromoeudesmane derivative (403) co-occurs with (404) (c/. Vol. 8, p. 101). A new component of the Hawaiian marine alga Laurencia nidifica has been identified as (-i-)-selina-4,7(l l)-diene (405) on the basis of spectroscopic evidence.Detailed chromatographic analysis of the sesquiterpenoid constituents of costus plant roots has revealed the presence of a-costol (406), y-costol (407), y-costal (408), and the elemene derivative (409). ... 

Sun, H. H., S. M. Waraszkiewicz, and K. L. Erickson Sesquiterpenoid Alcohols from the Hawaiian Marine Alga Laurencia nidifica — III. Tetrahedron Letters 1976, 585. 

Bozic, A.K., R.C. Anderson, G.E. Carstens, S.C. Ricke, T.R. Callaway, M.T. Yokoyama, J.K. Wang and D.J. Nisbet, 2009. Effects of methane-inhibitors nitrate, nitroethane, lauric acid, Lauricidin, and the Hawaiian marine algae Chaetoceros on ruminal fermentation in vitro. Bioresource Technology 100, 4017-4025. 

Sun, H.H., Waraszkiewicz, S.M., and Erickson, K.L. (1976) C15 halogenated compounds from the Hawaiian marine alga Laurencia nidifica. VI. The isomaneonenes. Tetrahedron Lett., 17, 4227-4230. 

Only one marine blue-green alga, Lyngbya ma.iuscula. poses any potential public health concern. This filamentous cyanophyte is the causative agent of a severe contact dermatitis that affects several swimmers and bathers using the windward beaches of the Hawaiian Islands during the summer months (1-3). The active... 

Macroalgal extracts possess various proteins and peptides which play an important role in the formulation of new collagen as well as increased skin hydration. In addition, marine red algae increases skin hydration significantly because of the en2ymes and minerals present in the algae which are prominent in Hawaiian Islands. French seaweeds are other... 

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