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van der Vlies C. Doubling of the methyl doublet in some isopropyl compounds with an asymmetric centre. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/recl.19650841010] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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JARDETZKY O, JARDETZKY CD. Introduction to Magnetic Resonance Spectroscopy Methods and Biochemical Applications. METHODS OF BIOCHEMICAL ANALYSIS 2006; 9:235-410. [PMID: 14451303 DOI: 10.1002/9780470110256.ch7] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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Lunidin und Lunidonin, zwei neue Alkaloide ausLunasia amaraBLANCOvar. repanda(LAUTERB.etK. SCHUM.) LAUTERB. Helv Chim Acta 2004. [DOI: 10.1002/hlca.19630460651] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Fukui K, Nakayama M, Tanaka S. Synthetic Studies of Sesamol Derivatives. XI. Synthesis of 5,6-Methylenedioxy-2-isopropenylbenzo[b]furan. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1969. [DOI: 10.1246/bcsj.42.1971] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Brink M, Larsson E. Beiträge zur kenntnis der magnetischen nichtäquivalenz der geminalen methylgruppen einiger isopropylverbindungen. Tetrahedron 1969. [DOI: 10.1016/s0040-4020(01)83067-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Lahey FN, McCamish M. Acrophylline and acrophyllidine. Two new alkaloids from Acronychia haplophylla. Tetrahedron Lett 1968; 12:1525-7. [PMID: 5640105 DOI: 10.1016/s0040-4039(01)98992-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Magnetische nichtäquivalenz und konformationen in a̋thyl-, benzyl- und isopropyl-substituierten 3H-Indolen. Tetrahedron 1968. [DOI: 10.1016/s0040-4020(01)96857-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Faizutdinova ZS, Bessonova IA, Yunusov SY. Structure of folifine and folifidine. Chem Nat Compd 1967. [DOI: 10.1007/bf00564119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Arndt R, Eggers S, Jordaan A. The alkaloids of anisotes sessiliflorus C.B.Cl. (acanthaceae)—five new 4-quinazolone alkaloids. Tetrahedron 1967. [DOI: 10.1016/s0040-4020(01)92313-0] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Tschesche R, Welters R, Fehlhaber HW. Alkaloide aus Rhamnaceen, I. Scutianin, ein cyclisches Peptid-Alkaloid ausScutia buxifolia Reiss. ACTA ACUST UNITED AC 1967. [DOI: 10.1002/cber.19671000137] [Citation(s) in RCA: 39] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Anet FAL. SOME ASPECTS OF THE NUCLEAR MAGNETIC RESONANCE SPECTRA OF COMPOUNDS CONTAINING C-METHYL GROUPS. CAN J CHEM 1961. [DOI: 10.1139/v61-300] [Citation(s) in RCA: 55] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The N.M.R. spectra of compounds containing various types of C-methyl groups are discussed with special reference to the effects of spin coupling. Particular attention is given to compounds containing the CHCH3 group in saturated systems. It is pointed out that the observed splitting of the methyl band is not always equal to the coupling constant between the methyl protons and the adjacent proton, even when the chemical shift between the two groups of protons is large.
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