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PubMed1975

General methods of alkaloid synthesis. XI. Total synthesis of the sceletium alkaloid A-4 and an improved synthesis of (+/-)-mesembrine.

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Alkaloids↗

PubMed1973

Alkaloids of the papaveraceae. XX. 2,9-Dimethoxy-3-hydroxypavinane, a new alkaloid from Argemone munita subsp. rotundata.

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Alkaloids↗

PubMed1972

General methods of alkaloid synthesis. X. The total synthesis of the sceletium alkaloids ( )-joubertiamine, ( )-O-methyljoubertiamine, and ( )-dihydrojoubertiamine.

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Alkaloids↗

PubMed2001

Enantiomeric 1,2,3-trithiane-containing alkaloids and two new 1,3-dithiane alkaloids from New Zealand ascidians.

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Alkaloids↗

PubMedDate not supplied

Catharanthus alkaloids XXXVII. 16-Epi-Z-isositsirikine, a monomeric indole alkaloid with antineoplastic activity from Catharanthus roseus and Rhazya stricta.

16-Epi-Z-isositsirikine (1) has been isolated from the leaves of Catharanthus roseus and Rhazya stricta and identified through a combination of spectral interpretation and chemical correlation. The compound displayed antineoplastic activity in the KB test system in vitro and the P-388 test system in vivo.

Acetylation↗

PubMed2000

General approach for the synthesis of sarpagine/ajmaline indole alkaloids. Stereospecific total synthesis of the sarpagine alkaloid (+)-vellosimine.

[reaction: see text] (+)-Vellosimine has been synthesized enantiospecifically in 27% overall yield from commercially available D-(+)-tryptophan methyl ester via the asymmetric Pictet-Spengler reaction and a stereocontrolled intramolecular palladium-coupling reaction as key steps.

Ajmaline↗

PubMed2000