Carbon‐13 NMR spectra of some tetra‐ and pentacyclic triterpene methyl ethers
作者:
J. W. Blunt,
M. H. G. Munro,
期刊:
Organic Magnetic Resonance
(WILEY Available online 1980)
卷期:
Volume 13,
issue 1
页码: 26-27
ISSN:0030-4921
年代: 1980
DOI:10.1002/mrc.1270130106
出版商: John Wiley&Sons Limited
数据来源: WILEY
摘要:
AbstractThe carbon‐13 NMR spectra have been recorded for representatives of three previously unexamined classes of pentacyclic triterpenes—lupanes, fernanes and arboranes. In addition to the spectra of lupeol methyl ether, cylindrin and arundoin, the spectra of a number of other triterpene methyl ethers are also recorded. The effect of methyl ether formation on the shilding values for carbons in the 3β‐hydroxy‐4,4‐dimethyl‐ ring A syste
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