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Structure and Conformation of Novel Derivatives of Chromanone:1H NMR,13C NMR and 1D-NOE Difference Spectroscopic Study of 8-(3′-Methyl - but - 2′ - en -1′ - oyl) - 7 - hydroxy - 2,2,5 -trimethyl chromanone

 

作者: C.S. Vijayalakshmi,   K.J.Rajendra Prasad,   SandipK. Sur,  

 

期刊: Spectroscopy Letters  （Taylor Available online 1991）
卷期: Volume 24, issue 3  

页码: 389-396

 

ISSN:0038-7010

 

年代: 1991

 

DOI:10.1080/00387019108020664

 

出版商: Taylor & Francis Group

 

关键词: 8-(3′-Methyl - but - 2′ - en - 1′ - oyl) - 7 - hydroxy -2,2 - dimethyl-2H-chromanone;8-(3′-Methyl - but - 2′ - en -1′ - oyl) - 7 - hydroxy -2,2,5-trimethyl-2H-chromanone;Structure elucidation;1H NMR;13C NMR;NOE;Mo

 

数据来源: Taylor

 

摘要:

Elucidation of the structure and conformation of a hitherto unknown novel derivative of chromanone, 8-(3′-Methyl - but - 2′ - en - 1′ - oyl) - 7 - hydroxy - 2,2,5 - trimethyl-2H-chromanone, obtained as a byproduct in the Friedel-Crafts acylation of active phenolic compounds by NMR methods is reported. A combination of the 1D-NOE difference spectroscopy and Molecular Mechanics calculation was used to assign the conformation of the title compound.

 

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