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13C NMR spectra of some coumarins of Haplophyllum obtusifolium

✍ Scribed by A. D. Vdovin; É. Kh. Batirov; A. D. Matkarimov; M. R. Yagudaev; V. M. Malikov


Book ID
104827497
Publisher
Springer
Year
1987
Tongue
English
Weight
208 KB
Volume
23
Category
Article
ISSN
0009-3130

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## Abstract ^13^C NMR data of nineteen coumarins, twelve of which bear a prenyl (isoprenoid) side‐chain at C‐3, are reported and compared with those of the C‐3 unsubstituted compounds. Unlike the linear isomers, no γ‐effect is observed in the corresponding angular derivatives; this is proposed as s

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