ring systems
Scaffold searching: automated identification of similar ring systems for the design of combinatorial libraries
... where C is the number of inter-atomic distances in common (using a tolerance of ±0.5Å) between a chosen atom in T and a chosen atom in R, and NT and NR are the numbers of inter-atomic distances in T and R, respectively, ...
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Modeling Giant Extrasolar Ring Systems in Eclipse and the Case of J1407b: Sculpting by Exomoons?
... structured ring system surrounding an unseen secondary companion, supporting the conclusions in Mamajek et ...and ring system. The size of the ring system is considerably larger than the Roche radius ...
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Hydroboration of strained cyclopropane ring systems promoted by Wilkinson's catalyst
... The 0.1 g 0.0005 moles of dry at 5 C and 6.5 g 0.054 of quadricyclane were C under a blanket of dry of 3 M NaOH, and 20 mL of 30 % sequentially, and the resulting mixture was stirred aft[r] ...
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The 1, 2-photoaromatization reaction : a versatile route to highly strained ring systems
... spectra showed that 25% reaction had occurred after 30 minutes, and essentially complete pyrolysis had occurred after lt hours.. tube and heated in an oil bath at 60°.[r] ...
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1,9 Diazahexacyclo[17 6 1 13,7 19,16 010,15 020,25]hexacosa 3,5,7(26),10(15),11,13,16(27),17,19(28),20(25),21,23 dodecaene
... indole ring systems of (I) are comparable with those observed in 2-(2-acetamido-5- methylbenzoyl)-1H-indole (Ravishankar et ...indole ring systems are inclined at an angle of ...benzene ...
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Stereochemical researches of reduced quinolines
... planar configuration of the three nitrogen valencies is, therefore, incompatible with the properties of these ring systems, and the nitrogen valency angles must at least alxoost equal th[r] ...
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2 (Naphthalen 1 yl) 4 (naphthalen 1 ylmethylidene) 1,3 oxazol 5(4H) one
... Intramolecular C—H N hydrogen bonds link the oxazole N atom to the naphthalene ring systems. In the crystal, intermolecular weak C—H O hydrogen bonds link the molecules into centrosymmetric dimers. – ...
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1,4 Bis(1 naphthylmethyl)piperazine
... naphthalene ring systems in an anti conformation with respect to one another across the piperazine ring ...piperazine ring has a normal chair conformation (Table 1). The naphthalene ...
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A diphenylboron chelate of an N alkyl 2,2 diarylglycolohydroxamic acid
... chelate ring systems established for the diphenylboron chelate of an N-unsubstituted 2,2-dialkylglycolohydroxamic acid and other hydroxamatoboron complexes (Kliegel et ...BONCCO ring, as in the ...
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A Simple and Efficient Microwave Assisted Synthesis of Pyrazolo [3,4-D] [1,2,4] Triazolo [1,5-A] Pyrimidines
... heterocyclic ring systems, synthesis of pyrazolo[3,4- d ][1,2,4]triazolo[1,5- a ]pyrimidine, a new ring system, was achieved by using a one-pot, microwave-assisted, catalyst-free, Biginelli like ...
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Volume 5 | Issue 1 - 2015
... medicinal chemists [2] Furthermore, special attention has been paid to oxygen-enriched molecules since it was shown that many compound collections have less oxygen content compared to natural products and marketed ...
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The addition of heterocyclic amines to a nitro alkene : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science at Massey University
... The synthesis of the novel oxoketopiperizine ring system would not only allow testing of the ring systems for their structure-activity relationships, but also extend the Michael addition[r] ...
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1 (2,4 Dichlorophenyl) 2 phthalimidoethanone
... The title compound, C16H9Cl2NO3, contains two planar ring systems and, in the crystal structure, there are intermolecular ± stacking interactions between neighboring benzene rings of the[r] ...
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(1R,2R,3S,5R,6R,7S,9aR,10aR) 4a,8a Diazaperhydroanthracene 1,2,3,5,6,7 hexaol
... anthracene ring systems with ring fusion through the N atoms; the closest relatives are two sugar-derived fused-ring pyrido- pyrimidine compounds, with the former ring carrying three ...
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Comparison of Conventional Ring, Mechanical Compact and Pneumatic Compact Yarn Spinning Systems
... This research is a comparative study of the physical properties of mechanical compact and conventional spun yarns and fabrics knitted from these yarns. To experiment the relational behavior, mechanical compact and ...
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Central circuitry in the jellyfish Aglantha II: The ring giant and carrier systems
... The ring giant axon is closely linked physiologically with the large axons that run down the tentacles on their aboral sides (tentacle giant ...two systems fire one-to-one during the escape response ...
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Application of four membered ring chalcogenation reagents to the synthesis of new phosphorus chalcogen heterocycles
... four‐membered ring chalcogenation reagents such as Lawesson’s reagent, 2,4‐diferrocenyl‐ 1,3,2,4‐diathiadiphosphetane 2,4‐disulfide (the ferrocene analogy of Lawesson’s reagent) and Woollins’ reagent with alkyl‐ ...
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Radical ring opening reactions of cyclopropylcarbinyl systems
... Likewise, a similar conclusion can be drawn if chloro groups are introduced at the radical centre while substitution on the ring is kept constant. Preferential formation of the secondary radical is again evident ...
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Type conditions of stable range for identification of qualitative generalized classes of rings
... Let R be a ring of semihereditary range 1 and aR + bR = R. Then there exists such y ∈ R that a+ by = er, where e ∈ B (R), r ∈ R (R). Since aR + bR = R, we have eR + bR = R. Then eu + bv = 1 for some elements u, v ...
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EMBEDDING RАPIDMINER MODELS IN JAVA CODE
... A new direction of application of the algebraic systems with the properties of a ring and a field is the large-scale analysis of signals. The novelty of this approach lies in the fact that the use of RNS ...
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