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Fortschritte der Chemie Organischer Naturstoffe / Progress in the Chemistry of Organic Natural Products, 34 (English, German, Paperback, Softcover reprint of the original 1st ed. 1977)
A J Aasen, Dev P. Chakraborty, C R Enzell, D Gross, J. Jacob, …
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R1,663
Discovery Miles 16 630
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Ships in 10 - 15 working days
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The volumes of this classic series, now referred to simply as
Zechmeister after its founder, L. Zechmeister, have appeared under
the Springer Imprint ever since the series' inauguration in 1938.
The volumes contain contributions in various topics related to the
origin, distribution, chemistry, synthesis, biochemistry, function
or use of various classes of naturally occurring substances ranging
from small molecules to biopolymers. Each contribution is written
by a recognized authority in his field and provides a comprehensive
and up-to-date review of the topic in question. Addressed to
biologists, technologists, and chemists alike, the series can be
used by the expert as a source of information and literature
citations and by the non-expert as a means of orientation in a
rapidly developing discipline.
The structure of eunicillin (89), a carbobicyclic diterpenoid
isolated from the Mediterranean gorgonian Eunicella stricta, was
reported in 1968 (1). At that time chlorine-containing diterpenoids
had been dis covered in the gorgonian Briareum asbestinum (2, 3),
but it was not until 1977 that the structure of the first briaran,
briarein A (211), was resolved by X-ray analysis (4). The first
trinervitane diterpenoid (26), which was isolated from
Trinervitermes termites, was reported in 1976 (5). OAc OAc ACO'....
OH 0 89 211 26 The discovery of these compounds marked the
appearance of a large and growing group of diterpenoids which are
commonly viewed as being formed from cembrane precursors by
secondary carbon-carbon bond closures. It should be emphasized,
however, that in the absence of biosynthetic evidence the question
of which groups of diterpenoids that should be classified as
cyclized cembranoids remains ambiguous. In the present article we
have included five tobacco diterpenoids (1-5) which. possess
prerequisite structural features and co occur with appropriate
cembrane precursors in tobacco. Although structurally reminiscent
of cyclized cembranoids, verticillanes, taxanes and cleomeolide are
not dealt with, since these diterpenoids of plant origin are not
believed to arise via preformed cembranoids (6-11)."
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