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Tandem Wittig-ene reaction approach to kainic acid
(American Chemical Society, 2009)
The first example of a tandem Wittig-intramolecular ene reaction approach and its application toward the synthesis of kainic acid is reported. The synthetic pathway involves conversion of prenyl bromide into phosphorane ...
Cascade Wittig reaction-double Claisen and Cope rearrangements: one-pot synthesis of diprenylated coumarins gravelliferone, balsamiferone, and 6,8-diprenylumbelliferone
(Elsevier, 2009)
A cascade Wittig reaction-double Claisen and Cope rearrangements has been employed for a one-pot synthesis of diprenylated coumarins gravelliferone, balsamiferone, and 6,8-diprenylumbelliferone from a common precursor ...
Marine metabolites: The sterols of soft coral
(American Chemical Society, 2009)
Sterols constitute a major group of secondary metabolites of soft corals. Several of these compounds have the 'usual' 3 beta-hydroxy, delta sup(5) (or delta sup(0)) cholestane skeleton, a large number of these metabolites ...
Total synthesis of (-)- and (+)-tedanalactam
(American Chemical Society, 2009)
The first stereoselective route providing access to both enantiomers of tedanalactam, a naturally occurring piperidone, has been developed. The stereogenic centers were generated by the use of Sharpless asymmetric ...
An expeditious I sub(2)-catalyzed entry into 6H-indolo[2,3-b]quinoline system of cryptotackieine
(American Chemical Society, 2009)
A synthesis of a series of novel 6H-indolo[2,3-b]- quinolines with different substituents on the quinoline ring is described. The method involves reaction of indole-3-carboxyaldehyde with aryl amines in the presence of a ...
Antifouling activity exhibited by secondary metabolites of the marine sponge, Haliclona exigua (Kirkpatrick)
(Elsevier, 2009)
Bioassay guided purification of the acetone extract of the marine sponge, Haliclona exigua, (Gulf of Mannar, India) yielded a fraction rich in bis-1-oxaquinolizidine alkaloids, active against seven strains of fouling ...