This Report is a review of the literature of marine natural product chemistry for 1993. Earlier
reports published in this journal cover the period from 1977 to December 1992. l-lO The …

Marine sponges are a rich source of structurally novel and biologically active molecules.
Among them is a class of alkylpyridinium compounds commonly found in sponges …

Publisher Summary This chapter provides an update on pyridine and piperidine alkaloids.
Cardiovascular effects of nicotine and cotinine have been studied. One study reported an …

The palladium-catalyzed cross-coupling of 3-iodopyridine, long-chain terminal dienes, and
benzylic amines or tosylamides provides a novel route to key intermediates for the synthesis …

Epoxyeicosatrienoic acids (EETs) are endothelium-derived eicosanoids that activate
potassium channels, hyperpolarize the membrane, and cause relaxation. We tested 19 …

During the last 30 years, a number of simple 3-alkylpyridine and 3-alkylpyridinium (3-AP)
compounds have been isolated from marine sponges belonging to the order Haplosclerida …

The synthesis of a novel β-keto γ-xanthyl phosphonate has been achieved. This highly
conjunctive reagent has been utilized in a combination of radical and ionic reactions to …

The chemistry of alkylpyridine alkaloids originating from marine sponges is comprehensively
reviewed, with emphasis on their natural occurrence, methods for their isolation …

(±)-Xestospongin D (2) has been isolated from the Singapore marine sponge Niphates sp.
The natural product was found to be racemic in contrast to earlier isolations of (+) …

Marine sponges have frequently afforded a wide variety of alkaloids. Polycyclic amines (3-
alkylpiperidine alkaloids) are secondary metabolites that are profusely found in Indo-Pacific …