Catalytic highly enantioselective transfer hydrogenation of β-trifluoromethyl nitroalkenes. An easy and general entry to optically active β-trifluoromethyl amines
Unveiling the Hidden Performance of Whole Cells in the Asymmetric Bioreduction of Aryl-containing Ketones in Aqueous Deep Eutectic Solvents
作者:Paola Vitale、Vincenzo Mirco Abbinante、Filippo Maria Perna、Antonio Salomone、Cosimo Cardellicchio、Vito Capriati
DOI:10.1002/adsc.201601064
日期:2017.3.20
baker's yeast reduction of arylpropanones using deep eutectic solvents (DESs) as biodegradable and non‐hazardous co‐solvents. The nature of DES [e.g. choline chloride/glycerol (2:1)] and the percentage of water in the mixture proved to be critical for both the reversal of selectivity and to achieve high enantioselectivity on going from pure water (up to 98:2 er in favour of the S‐enantiomer) to DES/aqueous
Substituted phenylalkanoic acid derivatives and use thereof
申请人:——
公开号:US20040044258A1
公开(公告)日:2004-03-04
A compound represented by the formula (I) or a salt thereof:
1
wherein n represents an integer of 1 to 3, R represents an alkyl group having 3 to 8 carbon atoms, a group represented by the following formula: R
1
(CH
2
)
k
— (wherein k represents 0 or an integer of 1 to 3; R
1
represents a saturated cyclic alkyl group having 3 to 7 carbon atoms or a saturated condensed cyclic alkyl group having 6 to 8 carbon atoms, and the group R
1
may be substituted with a lower alkyl group having 1 to 4 carbon atoms) and the like, and Ar represents a condensed bicyclic group such as naphthalen-1-yl group, which has suppressing action on prostaglandin and leukotriene production and is useful for prophylactic and/or therapeutic treatment of various inflammatory diseases and the like caused by these lipid mediators.
The present invention relates to compounds of formula I
wherein A, n, R
1a
to R
1e
and R
2
to R
5
are as defined in the description and claims, and pharmaceutically acceptable salts thereof. The compounds are glucocorticoid receptor antagonists useful for the treatment and/or prevention of diseases such as diabetes, dyslipidemia, obesity, hypertension, cardiovascular diseases, adrenal imbalance or depression.
Friedel-Crafts Alkylations of Arenes with Mono- and Bis(trifluoromethyl)oxiranes in Superacid Medium: Facile Synthesis of α-(Trifluoromethyl)- and α,α-Bis(Trifluoromethyl)-β-Arylethanols
Triflic acid catalyzed Friedel-Crafts alkylation of aromatics with mono- and bis(trifluoromethyl)oxiranes through ring opening afforded α-(trifluoromethyl) and α,α-bis(trifluoromethyl)-β-phenylethanols in excellent yields. The regioselectivity of the -oxirane ring opening and subsequent Friedel-Crafts alkylation have been found to depend on the electronic and steric effects of the -substituents in
Novel compounds represented by the following formula (I) that act as a ligand to sigma receptor/binding cite and a medicament comprising the same as an active ingredient:
1
wherein X represents an alkyl group, an aryl group, a heterocyclic group or the like; Q represents a group represented by —CH
2
—, —CO—, —O—, —CH(OR
7
)— or the like wherein R
7
represents a hydrogen atom, an alkyl group or the like; n represents an integer of from 0 to 5; R
1
and R
2
each represent a hydrogen atom, an alkyl group or the like; B represents either of the following groups:
2
wherein R
3
, R
4
, R
5
, and R
6
each represent a hydrogen atom, a halogen atom, an alkoxyl group or the like; m represents 1 or 2; and the ring of:
3
represents an aromatic heterocyclic ring.