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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-dione… Expand
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 dos… Expand
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
Rhodomentones A and B, Novel Meroterpenoids with Unique NMR Characteristics from Rhodomyrtus tomentosa.
SiRF InstantFix II Technology
Rhodium(III)‐catalyzed Intermolecular Unactivated Secondary C(sp3)−H Bond Amidation Directed by 3,5‐dimethylpyrazole
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, 2D… Expand
Racemic total synthesis of dactyloidin and demethyldactyloidin through the DL-proline-catalyzed Knoevenagel condensation/[4 + 2] cycloaddition cascade.
- Haibo Tan, Hongxin Liu, Xinzheng Chen, Huiyu Chen, Shengxiang Qiu
- Chemistry, Medicine
- Organic & biomolecular chemistry
- 30 September 2015
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 by… Expand
Chiral 1H NMR of Atropisomeric Quinazolinones With Enantiopure Phosphoric Acids
- Chaofei Wu, Hongxin Liu, Juan Li, Hongping Xiao, Xinhua Li, Jun Jiang
- Chemistry, Medicine
- Front. Chem.
- 17 August 2018
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 were… Expand
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.