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Shahid A, Noureen S, Choudhary MI, Yousuf S, Ahmed M. Crystal structure and electrostatic properties of prednisolone acetate studied using a transferred multipolar atom model. ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2017; 73:430-436. [PMID: 28579562 DOI: 10.1107/s2053229617006556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Accepted: 05/01/2017] [Indexed: 11/10/2022]
Abstract
Prednisolone acetate {systematic name: 2-[(8S,9S,10R,13S,14S,17R)-11,17-dihydroxy-10,13-dimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl]-2-oxoethyl acetate}, is an ophthalmic drug that belongs to the class of corticosteroids. Its crystal structure was refined using the classical independent atom model (IAM) and a transferred multipolar atom model using the ELMAM2 database. The results of both refinements have been compared. The ELMAM2 refinement was found to be superior in terms of the refinement statistics. It has been shown that certain electron-density-derived properties can be calculated on the basis of the transferred parameters for crystals which diffract to ordinary resolution. The procedure proves helpful in understanding the mode of action of the drug molecule.
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Affiliation(s)
- Ammara Shahid
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Sajida Noureen
- Department of Chemistry, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Muhammad Iqbal Choudhary
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Sammer Yousuf
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Maqsood Ahmed
- Department of Chemistry, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
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Pang XY, Li YX, Gong Y, Yan Y, Li HF, Zhu Y. Sesquiterpenes from the whole plants of Parasenecio roborowskii. Fitoterapia 2017; 116:24-33. [DOI: 10.1016/j.fitote.2016.10.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 10/25/2016] [Accepted: 10/26/2016] [Indexed: 10/20/2022]
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3
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Testa B, Vistoli G, Pedretti A. Mechanisms and pharmaceutical consequences of processes of stereoisomerisation — A didactic excursion. Eur J Pharm Sci 2016; 88:101-23. [DOI: 10.1016/j.ejps.2016.04.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Revised: 04/02/2016] [Accepted: 04/05/2016] [Indexed: 11/29/2022]
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Faroque MU, Yousuf S, Zafar S, Choudhary MI, Ahmed M. Transferred multipolar atom model for 10β,17β-dihydroxy-17α-methylestr-4-en-3-one dihydrate obtained from the biotransformation of methyloestrenolone. ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2016; 72:398-404. [PMID: 27146568 DOI: 10.1107/s2053229616005441] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2016] [Accepted: 03/31/2016] [Indexed: 11/10/2022]
Abstract
Biotransformation is the structural modification of compounds using enzymes as the catalysts and it plays a key role in the synthesis of pharmaceutically important compounds. 10β,17β-Dihydroxy-17α-methylestr-4-en-3-one dihydrate, C19H28O3·2H2O, was obtained from the fungal biotransformation of methyloestrenolone. The structure was refined using the classical independent atom model (IAM) and a transferred multipolar atom model using the ELMAM2 database. The results from the two refinements have been compared. The ELMAM2 refinement has been found to be superior in terms of the refinement statistics. It has been shown that certain electron-density-derived properties can be calculated on the basis of the transferred parameters for crystals which diffract to ordinary resolution.
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Affiliation(s)
- Muhammad Umer Faroque
- Department of Chemistry, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Sammer Yousuf
- H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Salman Zafar
- Institute of Chemical Sciences, University of Peshawar, Peshawar 25120, Pakistan
| | - M Iqbal Choudhary
- H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Maqsood Ahmed
- Department of Chemistry, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
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Richter WJ, Richter B. Experimentelle Prüfung von Näherungsansätzen für Chiralitätsfunktionen: Cyclopentan-Derivate. Isr J Chem 2013. [DOI: 10.1002/ijch.197600011] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Wirnhier E, Schnick W. Ca[PO2(NH)3(CO)2]2 - The First Biuretooxophosphate with a Divalent Cation. Z Anorg Allg Chem 2012. [DOI: 10.1002/zaac.201200068] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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7
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Azarakhshi F, Nori-Shargh D, Masnabadi N, Yahyaei H, Mousavi SN. Conformational Behaviors of 2-Substituted Cyclohexanone Oximes: An AB Initio, Hybrid Dft Study, and NBO Interpretation. PHOSPHORUS SULFUR 2012. [DOI: 10.1080/10426507.2011.571224] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Fatemeh Azarakhshi
- a Department of Chemistry , Arak Branch, Islamic Azad University , Arak , Iran
| | - Davood Nori-Shargh
- a Department of Chemistry , Arak Branch, Islamic Azad University , Arak , Iran
| | - Nasrin Masnabadi
- a Department of Chemistry , Arak Branch, Islamic Azad University , Arak , Iran
| | - Hooriye Yahyaei
- b Department of Chemistry, Zanjan Branch , Islamic Azad University , Zanjan , Iran
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Azarakhshi F, Nori-Shargh D, Attar H, Masnabadi N, Yahyaei H, Mousavi SN, Boggs JE. Conformational behaviours of 2-substituted cyclohexanones: a complete basis set, hybrid-DFT study and NBO interpretation. MOLECULAR SIMULATION 2011. [DOI: 10.1080/08927022.2011.590986] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Sedlmaier SJ, Römer SR, Schnick W. Synthesis and Characterization of Ca2(PO2NH)4·8H2O. Z Anorg Allg Chem 2011. [DOI: 10.1002/zaac.201100309] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Samuel O, Zhang SY, Kagan HB. STEREOCHEMISTRY AND STRUCTURE OF PHELLANPHOS AND NOPAPHOS, TWO CHIRAL DIPHOSPHINES FOR ASYMMETRIC HYDROGENATION. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/03086648408077650] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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11
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Linnert M, Bruhn C, Wagner C, Steinborn D. Syntheses and structures of lithiated sulfones Li[CR(R′)SO2Ph] – C versus O bound lithium. [{Li{CH(Me)SO2Ph}(thf)}∞] – The structure of a C-bound derivative. J Organomet Chem 2006. [DOI: 10.1016/j.jorganchem.2005.12.048] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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12
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Dräger M, Roß L. Über Germanium‐haltige Heterocyclen, I. Darstellung und Charakterisierung der 8‐Ring‐Verbindungen 2,2‐Dichlor‐1,3,6,2‐trithiagermocan und 5,5‐Dichlor‐1,4,6,5‐oxadithiagermocan. ACTA ACUST UNITED AC 2006. [DOI: 10.1002/cber.19751080538] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Martin Dräger
- Institut für Anorganische Chemie und Analytische Chemie der Johannes‐Gutenberg‐Universität, D‐6500 Mainz, Johann‐Joachim‐Becher‐Weg 24
| | - Ludwig Roß
- Institut für Anorganische Chemie und Analytische Chemie der Johannes‐Gutenberg‐Universität, D‐6500 Mainz, Johann‐Joachim‐Becher‐Weg 24
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Dräger M, Engler R. Über Zinn‐haltige Heterocyclen, I. Molekül‐ und Kristallstruktur von 2,2‐Dichlor‐1,3,6,2‐trithiastannaocan. ACTA ACUST UNITED AC 2006. [DOI: 10.1002/cber.19751080104] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Martin Dräger
- Institut für Anorganische Chemie und Analytische Chemie der Johannes Gutenberg‐Universität Mainz, D‐5600 Wuppertal, Dietrich‐Bonhoeffer‐Weg 1
| | - Rudolf Engler
- D‐6500 Mainz, Johann‐Joachim‐Becher‐Weg 24, und Gesamthochschule Wuppertal, Fachbereich 6 (Chemie), D‐5600 Wuppertal, Dietrich‐Bonhoeffer‐Weg 1
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Dräger M. Über Zinn‐haltige Heterocyclen, IV
1)
5,5‐Diphenyl‐1,4,6,5‐oxadithiastannocan, Fixierung eines konformativen Übergangszustandes in der Kristallstruktur. ACTA ACUST UNITED AC 2006. [DOI: 10.1002/cber.19811140606] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Martin Dräger
- Institut für Anorganische Chemie und Analytische Chemie der Universität Mainz, Johann‐Joachim‐Becher‐Weg 24, D‐6500 Mainz
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Hock R, Hillenbrand S, Erker G, Krüger C, Werner S. Dihydroselenapyrans by [4 + 2] Cycloaddition of Diaryl Selenoketones. ACTA ACUST UNITED AC 2006. [DOI: 10.1002/cber.19931260821] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Regina Hock
- Organisch‐Chemisches Institut der Universität Münster, Corrensstraße 40, D‐48149 Münster
| | - Stefanie Hillenbrand
- Organisch‐Chemisches Institut der Universität Münster, Corrensstraße 40, D‐48149 Münster
| | - Gerhard Erker
- Organisch‐Chemisches Institut der Universität Münster, Corrensstraße 40, D‐48149 Münster
| | - Carl Krüger
- Max‐Planck‐Institut für Kohlenforschung, Kaiser‐Wilhelm‐Platz 1, D‐45470 Mülheim a. d. Ruhr
| | - Stefan Werner
- Max‐Planck‐Institut für Kohlenforschung, Kaiser‐Wilhelm‐Platz 1, D‐45470 Mülheim a. d. Ruhr
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16
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Lukevics E, Dirnens V, Pokrovska N, Zicmane I, Popelis J, Kemme A. Addition of nitrile oxides to 2,3-dihydrofurylsilanes. Crystal and molecular structure of tetrahydrofuro-[2,3-d]-isoxazolylsilanes. J Organomet Chem 1999. [DOI: 10.1016/s0022-328x(99)00266-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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17
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Adam W, Mitchell CM, Saha‐Möller CR. Steric and Electronic Effects in the Diastereoselective Catalytic Epoxidation of Cyclic Allylic Alcohols with Methyltrioxorhenium (MTO). European J Org Chem 1999. [DOI: 10.1002/(sici)1099-0690(199904)1999:4<785::aid-ejoc785>3.0.co;2-#] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Waldemar Adam
- Institut für Organische Chemie der Universität Würzburg, Am Hubland, D‐97074 Würzburg, Germany Fax: (internat.) + 49(0)931/888‐4756
| | | | - Chantu R. Saha‐Möller
- Institut für Organische Chemie der Universität Würzburg, Am Hubland, D‐97074 Würzburg, Germany Fax: (internat.) + 49(0)931/888‐4756
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18
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Korybut-Daszkiewicz B, Gluziński P, Krajewski J, Kemme A, Mishnev A. Square-Planar and Octahedral Nickel(II) Complexes of Isomericcis-2,9-Bis(aminomethyl)-5,7,7,12,14,14-hexamethyl-1,4,8,11-tetraazacyclotetradecanes. Eur J Inorg Chem 1999. [DOI: 10.1002/(sici)1099-0682(19990202)1999:2<263::aid-ejic263>3.0.co;2-j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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19
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Szabó D, Kapovits I, Kucsman Á, Nagy P, Argay G, Kálmán A. Hypervalent S–Cl bond in cyclic acylaminochloro-λ4-sulfanes: a comparison of N–S–Cl, N–S+ClO−4 and N–S+⋯OC bond systems. J Mol Struct 1999. [DOI: 10.1016/s0022-2860(98)00543-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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20
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21
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Synthesis of d-1,2-dideoxy-1,2-difluoro-myo-inositol 3,4,5,6-tetrakisphosphate and its enantiomer as analogues of myo-inositol 3,4,5,6-tetrakisphosphate. Carbohydr Res 1998. [DOI: 10.1016/s0008-6215(98)00146-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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22
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Belostotskii AM, Aped P, Hassner A. Intramolecular dynamics in 4- to 6-membered saturated azacycles: a MM3 study. ACTA ACUST UNITED AC 1998. [DOI: 10.1016/s0166-1280(97)00368-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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23
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Bram G, Anh NT. The difficult marriage of theory and French organic chemistry in the 20th century. ACTA ACUST UNITED AC 1998. [DOI: 10.1016/s0166-1280(97)00241-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Deleuze MS, Cederbaum LS. Evidence for a partial breakdown of the molecular orbital picture in the ionization spectra of large saturated hydrocarbons. J Chem Phys 1996. [DOI: 10.1063/1.472585] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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25
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Zur struktur des diethylgermanium-diphenylsiliciumoxids und zur konformation von achtringen mit silicium und germanium. J Organomet Chem 1994. [DOI: 10.1016/0022-328x(94)80148-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Hohmann J, Nagy G, Günther G, Argay G, Kálmán A, Czira G. Isolation and structure elucidation of four new dihydro-β-agarofuran polyesters from Euonymus sachalinensis. ACTA ACUST UNITED AC 1994. [DOI: 10.1039/p19940003281] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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28
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Kapovits I, Rábai J, Szabó D, Czakó K, Kucsman Á, Argay G, Fülöp V, Kálmán A, Koritsánszky T, Párkányi L. Diaryldiacyloxyspirosulfuranes. Part 3. Sulfuranes with five-, six- and seven-membered spirorings: syntheses and molecular structures. ACTA ACUST UNITED AC 1993. [DOI: 10.1039/p29930000847] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Ben-efraim DA, Arad-yellin R. A dynamic nmr study of restricted rotation of two substituted phenyl groups in a c/s 1,2-diphenylcyclobutane. Tetrahedron 1988. [DOI: 10.1016/s0040-4020(01)89807-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Dodziuk H. The Study of Planarized and Planar Cyclohexane Rings on the Basis of Molecular Mechanics. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1987. [DOI: 10.1246/bcsj.60.3775] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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31
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Conformational analysis of thiolane-1-amides: an x-ray study of thiolane-1-tosylimide and diastereoisomeric 2-alkylthiolane-1-(arylsulphonyl)imides. J Mol Struct 1987. [DOI: 10.1016/0022-2860(87)87024-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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32
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Jalsovszky I, Kucsman Á, Ruff F, Koritsánszky T, Argay G, Kálmán A. Conformational analysis of thiane-1 imides: an x-ray study of thiane-1-tosylimide and diastereoisomeric 2-alkyl- and 4-phenylthiane-1-tosylimides. J Mol Struct 1987. [DOI: 10.1016/0022-2860(87)87023-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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X-ray study of the hetero ring flexibility in trans-5,6- trimethylene- and tetramethylene-5,6-dihydro 2-phenyl-[4H]-1,3-thiazines. J Mol Struct 1986. [DOI: 10.1016/0022-2860(86)87015-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Nader FW, Heinrich W, Baar-Schäfer M, Hangel E. Synthese und konformative Eigenschaften stereoisomerer 1,3-Cyclohexandiol- und 3-Aminocyclohexanol-Derivate. Röntgenstrukturanalyse vontrans-1,3-Dihydroxy-1,5,5-trimethylcyclohexan undc-3-Amino-r-1-hydroxy-1,5,5-trimethylcyclohexan. ACTA ACUST UNITED AC 1985. [DOI: 10.1002/cber.19851181104] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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X-ray study of the hetero ring flexibility in saturated and partially saturated 3,1-benzoxazin-2-ones and 3,1-benzoxazine-2-thiones [1]. J Mol Struct 1985. [DOI: 10.1016/0022-2860(85)85097-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Castello A, Jaime C, Marquet J, Moreno-Mañas M. Kinetically and thermodynamically controlled synthesis of 2,6-disubstituted cyclohexanone semicarbazones. A molecular mechanics study of a1,3-strai. Tetrahedron 1985. [DOI: 10.1016/s0040-4020(01)91400-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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37
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Müller A, Römer M, Bögge H, Krickemeyer E, Baumann FW, Schmitz K. (PPh4)4[Ag2S20]·S8, an unusual very sulfur-rich compound. Inorganica Chim Acta 1984. [DOI: 10.1016/s0020-1693(00)82416-0] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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38
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Darstellung und strukturen diorganylsubstituierter Silicium-Germanium-Sauerstoff-achtringe. J Organomet Chem 1984. [DOI: 10.1016/0022-328x(84)80254-5] [Citation(s) in RCA: 36] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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1,4,5,8-Tetraacyl-1,4,5,8-tetraazadecalins: Configurational and conformational analysis in the crystal and in solution. Tetrahedron 1984. [DOI: 10.1016/0040-4020(84)85127-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Hamor TA, Jones AS, Jones RH, Mcguigan C, Walker RT. The reaction of dihydroxyacetone with ethanedithiol. Synthesis and x-ray crystal structure of 1,4,7,10-tetrathiaspiro[5.5]undecane. J Heterocycl Chem 1983. [DOI: 10.1002/jhet.5570200108] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Drahnak TJ, West R, Calabrese JC. Synthesis and crystal structures of two iron derivatives of permethylcyclopentasilane. J Organomet Chem 1980. [DOI: 10.1016/s0022-328x(00)84663-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Mursakulov IG, Ramazanov E, Guseinov M, Zefirov NS, Samoshin V, Eliel EL. Stereochemical studies—XXV. Tetrahedron 1980. [DOI: 10.1016/0040-4020(80)80092-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Schneider HJ, Freitag W. Stereochemische und13C-NMR-spektroskopische Untersuchungen, XXI. Konformationsänderungen durch Reflexeffekte an 2,2-Dimethyl-und 2,2,6,6-Tetramethylcyclohexanen. ACTA ACUST UNITED AC 1979. [DOI: 10.1002/cber.19791120103] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Dräger M, Blecher A, Jacobsen HJ, Krebs B. Molekül- und kristallstruktur von hexamethylcyclo-tristannaselenan [(CH3)2SnSe]3. J Organomet Chem 1978. [DOI: 10.1016/s0022-328x(00)92243-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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