- Synthesis of Spirofurooxindoles via Phenyliodine(III) Bis(trifluoroacetate) (PIFA)-Mediated Cascade Oxidative C?O and C?C Bond Formation
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Upon treatment with solely a hypervalent iodine reagent of phenyliodine(III) bis(trifluoroacetate) (PIFA), 3-(2-hydroxyphenyl)-3-oxo-N-phenyl propanamides and a series of its derivatives were conveniently converted to a class of undocumented spirofurooxindoles under mild conditions. Control experiments provided evidence that this spirocyclization process encompassed a cascade oxidative reactions involving the formation of a C?O bond prior to that of C?C bond. (Figure presented.).
- Sun, Desong,Zhao, Xiaoyuan,Zhang, Bobo,Cong, Ying,Wan, Xintong,Bao, Mingmai,Zhao, Xue,Li, Bing,Zhang-Negrerie, Daisy,Du, Yunfei
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supporting information
p. 1634 - 1638
(2018/03/21)
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- Photolysis of α,β-Epoxyketones: A Green Synthesis of β-Hydroxyenones through Tandem H-Abstraction, Ring Cleavage and Isomerisation
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The photochemical behavior of various substituted epoxycarbonyl compounds consisting of more than one possible photo-labile site (i.e. δ-hydrogen, β-hydrogen and epoxide ring) has been investigated. These compounds on photo-irradiation produced the β-hydr
- Dalal, Aarti,Kumar, Dinesh,Kamboj, Ramesh C
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p. 1114 - 1120
(2016/01/26)
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- OXAZOLE AND THIAZOLE COMPOUNDS AND THEIR USE IN THE TREATMENT OF PGE2 MEDIATED DISORDERS
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Compounds of formula (I) or a pharmaceutiically acceptable derivative thereof: wherein X, Z, Y', Y'', R1 ,R2a, R2b, and Rx are as defined in the specification, a process for the preparation of such compounds, pharmaceutical compositions comprising such compounds and the use of such compounds in medicine.
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Page/Page column 27; 28
(2010/11/24)
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- The identification, synthesis, protein crystal structure and in vitro biochemical evaluation of a new 3,4-diarylpyrazole class of Hsp90 inhibitors
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High-throughput screening identified the 3,4-diarylpyrazole CCT018159 as a novel and potent (7.1 μM) inhibitor of Hsp90 ATPase activity. Here, we describe the synthesis of CCT018159 and a number of close analogues together with data on their biochemical p
- Cheung, Kwai-Ming J.,Matthews, Thomas P.,James, Karen,Rowlands, Martin G.,Boxall, Katherine J.,Sharp, Swee Y.,Maloney, Alison,Roe, S. Mark,Prodromou, Chrisostomos,Pearl, Laurence H.,Aherne, G. Wynne,McDonald, Edward,Workman, Paul
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p. 3338 - 3343
(2007/10/03)
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- Synthesis of Ether Oligomers
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(Equation presented) Hydroxyaromatic aldehydes and ketones were used as building blocks to prepare ether oligomers. An iterative two-step protocol involving Mitsunobu coupling and carbonyl reduction provided a protecting-group-free route with high yields. Activity screening of an 84-member library against proteases led to the discovery of micromolar inhibitors for trypsin, chymotrypsin, and subtilisin.
- Renaudet, Olivier,Reymond, Jean-Louis
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p. 397 - 400
(2007/10/03)
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- Imidazole derivatives or their salts
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Imidazole derivatives of the formula (1) or salts thereof, pharmaceuticals containing the derivatives or the salts, and intermediates for the synthesis of the derivatives or the salts (wherein R1 is lower alkyl; R2 is alkyl or aralkyl; and X1 is halogeno). These compounds exhibit G-CSF-like activities and can be substituted for G-CSF preparations. 1
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- Synthetic aci-Reductones: 3,4-Dihydroxy-2H-1-benzopyran-2-ones and Their cis- and trans-4a,5,6,7,8,8a-Hexahydro Diastereomers. Antiaggregatory, Antilipidemic, and Redox Properties Compared to Those of the 4-Substituted 2-Hydroxytetronic Acids
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Synthetic procedures for the elaboration of aci-reductones belonging to the 6- or 7-mono- or bis-substituted-3,4-dihydroxy-2H-1-benzopyran-2-ones (6 - 10) and their cis- and trans-4a,5,6,7,8,8a-hexahydro diastereomers (11, 12) are described.Hexahydrobenzo
- Witiak, Donald T.,Kim, Sung K.,Tehim, Ashok K.,Sternitzke, Kent D.,McCreery, Richard L.,et al.
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p. 1437 - 1445
(2007/10/02)
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