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Regioselectivity-reversed asymmetric aldol reaction of 1,3-dicarbonyl compounds.
Reverse regioselectivity: The first catalytic asymmetric C-1 functionalization of 1,3-dicarbonyl compounds by an aldol reaction is described, which regioselectively affords 6-hydroxyhexane-2,4-dioneExpand
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Asymmetric organocatalytic synthesis of β-Hydroxyynones with a quaternary carbon center under aqueous conditions
A reacao aldolica direta de metil inonas nao-modificadas sob condicoes aquosas catalisada pela amina terciaria quiral de tioureia e descrita. Este procedimento evitou a reacao retroaldolica dosExpand
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Chemical constituents of the trunks and roots of Thuja sutchuenensis.
Five new compounds including two stilbenes, designated thujasutchins A (1) and B (2), two phenolic compounds namely thujasutchins C (3) and D (4), as well as one sesquiterpene thujasutchin E (5),Expand
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SiRF InstantFix II Technology
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Ochuscins A‒G, highly oxygenated usnic acid derivatives from the deep-sea-derived fungus Ochroconis sp. FS449
Abstract Ochuscins A‒G (1–7), seven highly oxygenated usnic acid derivatives were isolated from the deep-sea-derived fungus Ochroconis sp. FS449. Their structures were elucidated based on the 1D, 2DExpand
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Racemic total synthesis of dactyloidin and demethyldactyloidin through the DL-proline-catalyzed Knoevenagel condensation/[4 + 2] cycloaddition cascade.
An efficient approach towards the first racemic total synthesis of dactyloidin (2) and demethyldactyloidin (3) is described. Their oxygen-bridged tricyclic ketal systems were rapidly constructed byExpand
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Chiral 1H NMR of Atropisomeric Quinazolinones With Enantiopure Phosphoric Acids
A chiral phosphoric acid promoted enantioselective NMR analysis of atropisomeric quinazolinones was described, in which a variety of racemic arylquinazolinones such as afloqualone and IC-87114 wereExpand
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Regioselectivity-Reversed Asymmetric Aldol Reaction of 1,3-Dicarbonyl Compounds.
The first organocatalytic asymmetric C1 aldol reaction of 1,3-dicarbonyl compounds to isatins and dihydrofurandiones is presented.