52648-77-8Relevant articles and documents
Palladium(II)-Catalyzed C(sp2)-H Bond Activation/C-N Bond Cleavage Annulation of N-Methoxy Amides and Arynes
Cheng, Xiu-Fen,Yu, Ting,Liu, Yi,Wang, Nan,Chen, Zhenzhen,Zhang, Guang-Lu,Tong, Lili,Tang, Bo
supporting information, p. 2087 - 2092 (2022/04/07)
The Pd(II)-catalyzed C-H bond activation/C-N bond cleavage annulation reaction of N-alkyoxyamide aryne is developed to synthesize 9,10-dihydrophenanthrenone derivatives. This reaction exhibited good functional group compatibility with yields up to 92%. Detailed mechanistic studies showed that the key to C-N bond cleavage is the formed eight-membered palladacycle intermediate undergoing nucleophilic addition to the carbonyl group, which provides a new and practical way for N-alkoxyamide directed C-H bond activation.
1,1-DISUBSTITUTED CYCLOALKYL DERIVATIVES AS FACTOR XA INHIBITORS
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Page 236-237, (2010/02/05)
The present application describes 1,1-disubstituted cycloalkyl compounds and derivatives thereof, or pharmaceutically acceptable salt forms thereof, which are useful as inhibitors of factor Xa.
Synthesis of a potential M1 muscarinic agent [76Br] bromocaramiphen
Strijckmans,Hunter,Dolle,Coulon,Loc'h,Maziere
, p. 471 - 481 (2007/10/03)
[76Br]bromocaramiphen was prepared from the iodo-analogue by a Cu+ nucleophilic bromodeiodination exchange. The radiolabelling yield was 40-45%. The radiochemical and chemical purities assessed by radio-TLC and HPLC were 98%. The precursor, iodocaramiphen, was synthesized from commercially available 1-phenylcyclopentanecarboxylic acid with a 10% overall yield in a 5 step procedure. This synthesis includes the formation of 1-(p-nitrophenyl)-, 1-(p-aminophenyl)- and 1-(p-iodophenyl) cyclopemane carboxylic acid. In vivo studies in rats showed high uptake in brain. A 10% decrease was observed by coinjecting with the radiotracer a cold load of QNB, a non subtype selective muscarinic ligand. The metabolite study performed in the pons tissues indicated that there was still 92% of unchanged radiotracer 30 mm p.i. After coinjection of dextrometorphan, a sigma ligand, a reduction of the radioactivity uptake by 20 to 27% was observed in the pons, the cortex, the striatum and the cerebellum. These data suggest that [76Br]bromocaramiphen is not a potential probe for investigating the status of central M1 muscarinic receptors because of its high lipophilicity (log P7 4 = 2.4) and its affinity for sigma sites.