A New Rearranged Non-Aromatic Salpichrolide from Salpichroa OriganifoliaAntifeedant Activity Evaluation of Withanolides from Jaborosa integrifoliaAddition of Organotin Anions to α,β-Unsaturated NitrilesApplications of Olefination Reactions to Cassiol SynthesisA Short Synthesis of the Main Lactone Ketal Backbone Present in Saudin

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A New Rearranged Non-Aromatic Salpichrolide from Salpichroa OriganifoliaFrom the aerial parts of Salpichroa origanifolia a new withanolide in which the C-13 angula
Antifeedant Activity Evaluation of Withanolides from Jaborosa integrifoliaAntifeedant activity of the 4-deoxi-27-hydroxi-withanolides (1, 2 y 3) isolated from Jaborosa in
Addition of Organotin Anions to α,β-Unsaturated NitrilesThe addition reaction of triorganotin anions to α,β-unsaturated nitriles leads to α-alkyl-β-stannyln
Applications of Olefination Reactions to Cassiol SynthesisOlefination reactions directed to the synthesis of cassiol from compounds 2-5 will be discussed.
A Short Synthesis of the Main Lactone Ketal Backbone Present in SaudinWe are describing a brief stereospecific synthesis of a model compound related to Saudin, with a lac
Aziridine Carboxylates, Carboxamides and Lactones: New Methods for Their Preparation and Their Transformation into α- and β-Amino Acid DerivativesThe preparation of a variety of novel aziridine-γ-lactones (3) from carbohydrates is described. In c
An Improved Synthesis of 3b-Acetoxy-lanost-8-en-24-one (24-Ketolanosteryl Acetate)The oxidation of a borane intermediate by PFC provides a convenient synthesis of 24-ketolanosteryl a
A High-Yielding Synthesis of the Naturally Occurring Antitumour Agent IrisquinoneA short, high-yielding synthesis of the antitumour agent irisquinone (1) is described. The key steps
Acid-Base Initiated Cyclization and Retrocyclization Reactions of Ethyl 2-(3-Acylselenoureido)benzoates, -thiophene-3-carboxylates and the Corresponding 2-(3-Acylisoselenoureido) DerivativesAcid and base initiated cyclization and retrocyclization reactions of the selenoureas 1-6 and isosel
An Efficient and Chemoselective Method for Oximination of β-Diketones Under Mild and Heterogeneous ConditionsA combination of oxalic acid dihydrate and sodium nitrite in the presence of wet SiO₂ was
Alkylation of Zwitterionic Thiooxalic Acid DerivativesThe new S-alkyl thiooxal-1-hydrazono-2-amidrazonium halides 2-4 were synthesized by reaction of the
Aminoacids in the Synthesis of Heterocyclic Systems: The Synthesis of Triazinoquinazolinones, Triazepinoquinazolinones and Triazocinoquinazolinones of Potential Biological InterestA number of novel triazinoquinazolinones (5b,c and 8), triazepinoquinazolinones(5a, 6b, 7 and 9) and
A Simple Method for Synthesis of Active Esters of Isonicotinic and Picolinic AcidsA method for preparation of the p-nitrophenyl-, N-hydroxysuccinimidyl- and pentafluorophenyl esters
Annellation of Triazole and Tetrazole Systems onto Pyrrolo[2,3-d]pyrimidines: Synthesis of Tetrazolo[1,5-c]-pyrrolo[3,2-e]-pyrimidines and Triazolo[1,5-c]pyrrolo-[3,2-e]pyrimidines as Potential Antibacterial AgentsSyntheses of several novel 4-chloropyrrolo[2,3-d]pyrimidines (1), 4-hydrazinopyrrolo[2,3-d]pyrimidin
A Novel Synthesis of 1,2,4-TriazolopteridinesReaction of 1,2-dihydro-2-thioxopteridin-4(3H)-one, 6,7-dimethyl-1,2-dihydro-2-thioxopterid
An Efficient Preparation of 1,2-Diamino-1-phenylheptaneA convenient four-step method for the preparation of the lipophilic vicinal diamine 1,2-diamino-1-ph
A New Palladium-Catalyzed Phenyl-Alkene Bond FormationA new method of palladium-catalyzed phenyl-alkene bond formation is reported. This reaction involves
An Acylated Kaempferol Glycoside from Flowers of Foeniculum vulgare and F. DulceAn acylated kaempferol glycoside, namely kaempferol-3-O-α-L-(2?,3?-di-E-pcoumaroyl)-rhamnoside (1) w
An Improved Three Step Synthesis of (-)-3β-Hydroxycarvone from (-)-Carvone(-)-Carvone (3) has been efficiently transformed into (-)-3β-hydroxycarvone (1), which is expected t
An Investigation of the Reactions of Substituted Homoallylic Alcohols with Various Oxidation ReagentsSubstituted homoallylic alcohols have been synthesised both by [2,3]-Wittig rearrangement of unsymme

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