Search results for "Natural product"

showing 3 items of 163 documents

ETICHETTE INTELLIGENTI PER LA RILEVAZIONE VISIVA DEL DETERIORAMENTO DEI PRODOTTI ALIMENTARI

2015

smart label food packaging natural products biopolymers
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Organocatalytic Oxa-Michael/Michael/Michael/Aldol Condensation Quadruple Domino Sequence : Asymmetric Synthesis of Tricyclic Chromanes

2018

An efficient and highly stereoselective one-pot, four-component synthesis of functionalized tricyclic chromanes has been achieved through an organocatalyzed quadruple domino reaction. The reaction sequence involves an oxa-Michael/Michael/Michael/aldol condensation between alcohols, 2 equiv of acrolein, and nitrochromenes to generate the pharmaceutically important tricyclic chromanes bearing three contiguous stereogenic centers including a chiral tetrasubstituted carbon center in good domino yields (30–70%) and excellent diastereo- and enantioselectivities (>20:1 dr and >99% ee). peerReviewed

synthesisalkoholit (yhdisteet)natural productsStereochemistryasymmetric synthesisluonnontuotteet010402 general chemistry01 natural sciencesBiochemistryDominoStereocenterchemistry.chemical_compoundCascade reactionsynteesiPhysical and Theoretical Chemistryta116chemistry.chemical_classification010405 organic chemistryOrganic ChemistryAcroleindomino reactionsEnantioselective synthesistricyclic chromanes0104 chemical scienceschemistryalcohols (organic compounds)asymmetriaAldol condensationStereoselectivityasymmetryTricyclic
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Preliminary data on antiproliferative effects in haemocyte extracts of the ascidian Styela plicata (Stolidobranchiata, Styelidae)

2008

tunicatesStyela marine natural products anticancer activity
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