4426-47-5Relevant academic research and scientific papers
COMPOUNDS AND SYNTHETIC METHODS FOR THE PREPARATION OF RETINOID X RECEPTOR-SPECIFIC RETINOIDS
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Paragraph 198; 199, (2019/06/05)
Provided herein are compounds useful for the preparation of compounds that have retinoid-like biological activity. Also provided herein are processes for the preparation of compounds that have retinoid-like biological activity.
Pd-Catalyzed Conjunctive Cross-Coupling between Grignard-Derived Boron “Ate” Complexes and C(sp2) Halides or Triflates: NaOTf as a Grignard Activator and Halide Scavenger
Lovinger, Gabriel J.,Aparece, Mark D.,Morken, James P.
supporting information, p. 3153 - 3160 (2017/03/11)
Catalytic enantioselective conjunctive cross-couplings that employ Grignard reagents are shown to furnish an array of nonracemic chiral organoboronic esters in an efficient and highly selective fashion. The utility of sodium triflate in facilitating this reaction is two-fold: it enables “ate” complex formation and overcomes catalytic inhibition by halide ions.
Amino acid-promoted C-H alkylation with alkylboronic acids using a removable directing group
Zhang, Yanghui,Zhang, Yu,Jiang, Hang,Chen, Dushen
supporting information, p. 4585 - 4589 (2016/06/09)
Palladium-catalyzed C-H alkylation reaction with alkylboronic acids has successfully been developed using a removable pyridyldiisopropylsilyl directing group. The amino acid played a crucial role as a ligand in the reaction. The alkylation protocol is also applicable to the coupling of C(sp3)-H bonds with alkylboronic acids.
Synthesis of 4,6-disubstituted pyrimidines via Suzuki and Kumada coupling reaction of 4,6-dichloropyrimidine
Qing, Feng-ling,Wang, Ruowen,Li, Benhan,Zheng, Xing,Meng, Wei-Dong
, p. 21 - 24 (2007/10/03)
A series of 4,6-disubstituted pyrimidines were synthesized via Suzuki and Kumada coupling reaction of 4,6-dichloropyrimidine.
GRF analogs with increased biological potency
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, (2008/06/13)
The present invention relates to chimeric fatty body-GRF analogs with increased biological potency, their application as anabolic agents and in the diagnosis and treatment of growth hormone deficiencies. The chimeric fatty body-GRF analogs include an hydrophobic moiety (tail), and can be prepared, either by anchoring at least one hydrophobic tail to the GRF, in the chemical synthesis of GRF. The GRF analogs of the present invention are biodegradable, non-immunogenic and exhibit an improved anabolic potency with a reduced dosage and prolonged activity.
P1 Phenethyl peptide boronic acid inhibitors of HCV NS3 protease
Priestley,De Lucca, Indawati,Ghavimi, Bahman,Erickson-Viitanen, Susan,Decicco, Carl P.
, p. 3199 - 3202 (2007/10/03)
A series of peptide boronic acids containing extended, hydrophobic P1 residues was prepared to probe the shallow, hydrophobic S1 region of HCV NS3 protease. The p-trifluoromethylphenethyl P1 substituent was identified as optimal with respect to inhibitor potency for NS3 and selectivity against elastase and chymotrypsin.
Preparation, properties, and synthetic potentials of novel boronates in a fluorous version (fluorous boronates)
Chen, Dajun,Qing, Feng-Ling,Huang, Yangen
, p. 1003 - 1005 (2007/10/03)
(equation presented) 4a-j R = aryl, alkenyl, alkyl A series of boronic acids were attached to a fluorous tag by esterification. Functional transformations of these boronates together with the fluorous Suzuki coupling reaction illustrated their usefulness in fluorous-phase techniques.
Synthesis of 4-alkyl-3-bromo-2(5H)-furanones and unsymmetrically disubstituted 3,4-dialkyl-2(5H)-furanones by palladium-catalyzed cross-coupling reactions
Bellina, Fabio,Anselmi, Chiara,Rossi, Renzo
, p. 3851 - 3854 (2007/10/03)
Easily available 3,4-dibromo-2(5H)-furanone undergoes a regioselective cross-coupling reaction with alkylboronic acids in the presence of catalytic amounts of PdCl2(MeCN)2 and AsPh3 and a large molar excess of Ag2O to provide the corresponding 4-alkyl-3-bromo-2(5H)-furanones in satisfactory yields. These monobromo derivatives have proven to be useful precursors to unsymmetrically substituted 3,4-dialkyl-2(5H)-furanones which include the racemic form of naturally occurring seiridin.
1,2,4,5-Tetraaza-3,6-diborinane monomers and dimers
Miller, John J.,Johnson, Frederic A.
, p. 69 - 74 (2007/10/06)
The thermal decomposition of hydrazine-t-butylborane has been examined and the product has been identified as a polyhedral cage compound, a dimer of 3,6-di-t-butyl-1,2,4,5-tetraazadiborinane (VIII). Nuclear magnetic resonance data for this compound and its derivatives with methyl isocyanate are presented and discussed in relation to their structures. Proton-exchange studies of VIII and its derivatives were monitored by nmr. Attempts to dimerize 3,6-diphenyl-1,2,4,5-tetraaza-3,6-diborinane (I, R = C6H5) provided the same product as thermal decomposition of hydrazine-phenylborane. This product is not a polyhedral cage compound.
