37730-32-8

Upstream product

• 105-36-2 ethyl bromoacetate 
• 586-37-8 1-(3-Methoxyphenyl)ethanone 
• 7706-83-4 3-(3-methoxyphenyl)-2-butenoic acid ethyl ester 
• 625-38-7 but-3-enoic acid 
• 766-85-8 3-methoxy-1-iodobenzene 
• 940890-84-6 3-(3-methoxyphenyl)-but-2-enoic acid methyl ester 
• 7706-83-4 (E)-3-(3-methoxyphenyl)-2-butenoic acid ethyl ester 
• 3095-95-2 diethylphosphonoacetic acid 

Relevant academic research and scientific papers

Synergistic N-Heterocyclic Carbene/Palladium-Catalyzed [3 + 2] Annulation of Vinyl Enolates with 1-Tosyl-2-vinylaziridine

The synergistic combination of N-heterocyclic carbene organocatalysis and transition-metal catalysis for a formal [3 + 2] annulation between 3-substituted but-2-enoates and 1-tosyl-2-vinylaziridine was developed. This cooperative strategy provides a facile and efficient access to various functionalized (E)-3-ethylidene-4-vinylpyrrolidin-2-ones in a regioselective and stereoselective manner. The preliminary asymmetric studies were also performed, which indicated a potential for enantioselective annulation of vinyl enolate intermediates with transition-metal-π-allyl species.

Pd-Catalyzed decarboxylative cross-coupling reactions of epoxides with α,β-unsaturated carboxylic acids

A Pd-catalyzed decarboxylative cross-coupling of α,β-unsaturated carboxylic acids with cyclic and acyclic epoxides has been developed. Both β-monosubstituted and β-disubstituted unsaturated carboxylic acids, as well as conjugated diene unsaturated carboxylic acids are suitable reaction substrates. Substituted homoallylic alcohols were obtained in moderate to good yields. The product was obtained as a mixture of diastereomers favoring the anti diastereomer of the cyclic epoxides. This work provides a method for the modification of complex organic molecules containing α,β-unsaturated carboxylic acids.

Construction of Multi-Substituted Benzenes via NHC-Catalyzed Reactions of Carboxylic Esters

A carbene-catalyzed ester activation reaction for the synthesis of multi-substituted benzenes is developed. Tetra-substituted benzene compounds are efficiently synthesized through this methodology. Compared with aldehyde substrates used in previous reports, the ester substrates used here are much more readily available and inexpensive. In addition, the TEMPO oxidant used here is more inexpensive than the quinones commonly used in related carbene-catalyzed reactions.

DMAP-Catalyzed [4 + 2] Cycloaddition of α,β-Unsaturated Carboxylic Acids with Ketones for Synthesis of α,β-Unsaturated δ-Lactones

The DMAP-catalyzed [4 + 2] cycloaddition of α,β-unsaturated carboxylic acids with ketones furnishing α,β-unsaturated δ-lactones in good yields (up to 80%) is described, which is the first example of remote γ-C(sp3)-H activation of α,β-unsaturated carboxylic acids facilitated by DMAP, a pyridine-based catalyst. Copyright

An Expeditious Synthesis of 8-Methoxy-1-tetralone

8-Methoxy-1-tetralone was synthesized in a concise and efficient manner involving a sequential palladium-mediated cross-coupling reaction (Heck), catalytic hydrogenation, and intramolecular acylation mediated by Eaton's reagent or Lewis acids. The pivotal step in the synthesis was the use of a bromine substituent at the benzenoid C4 position of the intermediate methyl 4-arylbutyric ester to ensure cyclization ortho to the methoxy moiety and obviate cyclization at the para position to the thermodynamically preferred 6-methoxy-1-tetralone, the sole product obtained in the absence of this blocking group.

Enantioselective Hydrogenation of β,β-Disubstituted Unsaturated Carboxylic Acids under Base-Free Conditions

An additive-free enantioselective hydrogenation of β,β-disubstituted unsaturated carboxylic acids catalyzed by the Rh-(R,R)-f-spiroPhos complex has been developed. Under mild conditions, a wide scope of β,β-disubstituted unsaturated carboxylic acids were hydrogenated to the corresponding chiral carboxylic acids with excellent enantioselectivities (up to 99.3% ee). This methodology was also successfully applied to the synthesis of the pharmaceutical molecule indatraline.

Optimisation of 6-substituted isoquinolin-1-amine based ROCK-I inhibitors

Rho kinase is an important target implicated in a variety of cardiovascular diseases. Herein, we report the optimisation of the fragment derived ATP-competitive ROCK inhibitors 1 and 2 into lead compound 14A. The initial goal of improving ROCK-I potency relative to 1, whilst maintaining a good PK profile, was achieved through removal of the aminoisoquinoline basic centre. Lead 14A was equipotent against both ROCK-I and ROCK-II, showed good in vivo efficacy in the spontaneous hypertensive rat model, and was further optimised to demonstrate the scope for improving selectivity over PKA versus hydroxy Fasudil 3.

Isoquinoline derivatives

The invention relates to isoquinoline derivatives having the general Formula I wherein X is O, S or NH; Y is OH or NH2; m is 0, 1 or 2; n is 1 or 2; R1 is H, when Y is NH2; or R. is H, (C1-4)alkyl or halogen, when Y is OH; R2 and R3 are independently H, (C1-4)alkyl or halogen; R is H or (C1-6)alkyl, optionally substituted with OH, (C1-4)-alkyloxy, (C1-4)alkyloxycarbonyl, (C3-7)cycloalkyl, which may optionally comprise a heteroatom selected from O and S, (C6-10)aryl, (C6-10)aryloxy or a 5- or 6-membered heteroaryl group comprising 1-3 heteroatoms independently selected from O, N and S, each aryl or heteroaryl group being optionally substituted with 1-3 substituents independently selected from (C1-4)alkyl, (C1-4)alkyloxy, (C1-4)alkylsulfonyl and halogen; or a pharmaceutically acceptable salt thereof, to pharmaceutical compositions comprising the same as well as to the use of the isoquinoline derivatives in the treatment of ROCK-I related disorders such as hypertension, atherosclerosis and glaucoma.

ISOQUINOLINE DERIVATIVES

The invention relates to isoquinoline derivatives having the general Formula (I) wherein X is O, S or NH; Y is OH or NH2; m is 0, 1 or 2; n is 1 or 2; R1 is H, when Y is NH2; or R1 is H, (C1-4)alkyl or halogen, when Y is OH; R2 and R3 are independently H, (C1-4)alkyl or halogen; R is H or (C1-6)alkyl, optionally substituted with OH, (C1-4)- alkyloxy, (C1-4)alkyloxycarbonyl, (C3-7)cycloalkyl, which may optionally comprise a heteroatom selected from O and S, (C6-10)aryl, (C6-10)aryloxy or a 5- or 6-membered heteroaryl group comprising 1-3 heteroatoms independently selected from O, N and S, each aryl or heteroaryl group being optionally substituted with 1-3 substituents independently selected from (C1-4)alkyl, (C1-4)alkyloxy, (C1-4)alkylsulfonyl and halogen; or a pharmaceutically acceptable salt thereof, to pharmaceutical compositions comprising the same as well as to the use of the isoquinoline derivatives in the treatment of ROCK-I related disorders such as hypertension, atherosclerosis and glaucoma.

Construction of C-S bonds with a quaternary stereocenter through a formal Michael reaction: Asymmetric synthesis of tertiary thiols

Quaternary stereocenters that bear a sulfur substituent can be created with nearly perfect stereocontrol through an intramolecular Michael-type process. Lewis acids (L.A.) accelerate the intramolecular sulfur-atom transfer from the oxazolidine-2-thione functionality to the β carbon atom of the β,β-disubstituted enoyl moiety, whereas the chirality of the oxazolidine-2-thione portion controls reaction stereochemistry (see scheme).