Determination of the structure of 7-diethylamino-4-(1,2,3-triazol-1-yl)-2H-1-benzopyran-2-one derivatives using two-dimensional heteronuclear chemical-shift correlated NMR techniques

1994 ◽  
Vol 43 (7) ◽  
pp. 1270-1272
Author(s):  
N. N. Sveshnikov ◽  
M. A. Kirpichenok
Keyword(s):  
Chemical Shift ◽  
Two Dimensional ◽  
Nmr Techniques ◽  
Heteronuclear Chemical Shift

An improved route to pregna-5,20-dien-3β-ol (muricin aglycone): Carbon and proton nuclear magnetic resonance assignments for the aglycone and a number of related pregnene derivatives

1987 ◽  
Vol 65 (3) ◽  
pp. 666-669 ◽  
Author(s):  
R. D. Dawe ◽  
J. L. C. Wright
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Chemical Shift ◽  
Resonance Assignments ◽  
Proton Nuclear Magnetic Resonance ◽  
Two Dimensional ◽  
Chemical Shift Correlation ◽  
Heteronuclear Chemical Shift ◽  
Nuclear Magnetic

Carbon and proton assignments for muricin aglycone (5) and a number of related pregnenes, carried out with the aid of two-dimensional homo- and heteronuclear chemical shift correlation experiments, have resulted in previously reported carbon assignments for the aglycone being revised. An improved route to muricin aglycone is also reported.

Isolation and Structure Determination of Three New Sesquiterpenoids from Achillea millefolium

2012 ◽  
Vol 67 (5) ◽  
pp. 421-425 ◽  
Author(s):  
Umar Farooq ◽  
Afsar Khan ◽  
Saleha Suleman Khan ◽  
Shazia Iqbal ◽  
Rizwana Sarwar ◽  
...  
Keyword(s):  
Sesquiterpene Lactone ◽  
2D Nmr ◽  
Achillea Millefolium ◽  
Two Dimensional ◽  
H Nmr ◽  
Whole Plant ◽  
Phytochemical Investigation ◽  
Nmr Techniques ◽  
C Nmr

Phytochemical investigation of the whole plant of Achillea millefolium led to the isolation of three new sesquiterpenes which were trivially named as sesquiterpene lactone-esters A and B (1 and 2), and sesquiterpene lactone-diol (3). The structures of these compounds were determined with the help of one- and two-dimensional (1D and 2D) NMR techniques including 1H NMR, 13C NMR, HMQC, HMBC, COSY, and NOESY experiments.

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