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Book Review Guaianolides and Germacranolides. By F. dorm and L. Dolej. Monograph in the series УChemistry of Natural ProductsФ edited by E

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Guaianolides and Germacranolides. By F. Sorm and L. Dolejs’.
Monograph in the series “Chemistry of Natural Products”,
edited by E. Lederer. Holden-Day, Inc. (Publishers), San
Francisco 1966. 1st Edit., 153 pages, $ 10.75.
This book is a n excellent review of the principal results obtained over the past eight years in the field of these two groups
of substances of the sesquiterpene series. The reader is first
acquainted with the basic structures guaiane and dimethylisopropylcyclodecane (germacrane) and with the physiological effects of these bitter plant constituents. The next chapter
gives a short historical account of guaianolides, followed by
a description of the individual groups of substances. The
description of the lactones from the artabsine group of substances is followed by that of the ketolactones from the
matricarin group. Lactones with abnormal skeletons are then
described, and mention is also made of guaianolides whose
structures are not yet certain.
The second chapter deals with the germacranolides, the
detailed investigation of which is due to the authors of this
monograph. Like the guaianolides, these occur only in
plants of the Compositae family, and have recently attracted
special interest because some of them have a carcinostatic
action. The physical properties of all the guaianolides and
germacranolides known at present are collected in an appendix, and special mention should be made of the inclusion of
25 IR spectra. A book dealing with a narrow specialized
field obviously cannot appeal to a large public; however, the
present work will prove an excellent reference work and
review to the chemist who is interested in this topic. Steps
should be taken in subsequent editions to correct a few minor
printing errors (an oxygen atom is missing from the acetal
group in formula 71, and the CHj groups o n C-5 are missing
from the formulas of ambrosin and damsin on p. 110) as well
as the incorrect arrangement of the IR spectra of the guaianolides under the germacranolides and vice versa. The presentation of the book, the clear print, and the clear formulas
are exemplary. On the whole, this book is recommended as
an addition t o the natural-product chemist’s library.
E. Klein
[NB 603 IE]
Electroanalytical Chemistry, Vol. 1. By A . J . Bard, Marcel
Dekker, Inc., New York 1966. 1st Edit., x, 426 pp., 42
figures, $ 15.75.
The aim of the editor of the new series is to introduce
electroanalytical methods in the widest possible sense. The
review articles are intended to provide information about
established techniques as well as about more recent developments.
The first contribution, by D.E. Smifh, is entitled “AC Polarography and Related Techniques” (155 pp.). Alternatingcurrent polarography has been studied since the middle of
the nineteen-forties, but has lately received particular impetus
from developments in second-harmonic polarography, phasesensitive amplification, and R F polarography. In the theoretical section, Smifh deals systematically with diffusion-dependent waves, quasi-reversible reactions, systems with coupled
chemical reactions of first, second, and higher order, and
multi-step charge transfer and adsorption - some detailed
derivations are included.The section on instrumentation is
much shorter, and is directed to the use of operational
amplifiers. Fundamental knowledge of electrode kinetics and
AC circuits is assumed. The analyst expecting a compilation
of methods of determination or even simply ideas for practical
analysis is going to be very disappointed. On the other hand,
the article is of great value to all those who wish to participate in the introduction of alternating-current methods in
the analytical laboratory.
The arrangement of the second article on “Applications of
Chrono-potentiometry to Problems in Analytical Chemistry”
(40 pp.) by G . Davies likewise relies on the nature of the ratedetermining step. A very careful description of instrumentation and the decisive electrode pretreatment follows. Examples are given of application in adsorption, and in chemical
and electrode kinetics, as well as a tabular compilation of
analytical determinations together with source references.
In the contribution “Photoelectrochemistry and Electroluminescence” (44 pp.), T. Kuwana deals only with photoeffects at electrodes immersed in solution. The photopotentials
in organic systems (including photopolarography), on oxide
surfaces and semiconductors, the irradiation of metal electrodes in nonabsorbing solutions, and the luminescence on
electrodes are described. The article can be recommended as
an introduction to a field that is still in a state of flux.
The article “The Electrical Double Layer, Part I, Elements of
Double Layer Theory” (169 pp.) has been written by D. M .
Mohilner. Both in electrode kinetics and in electroanalysis,
particularly in trace analysis, failure to allow for doublelayer effects can lead to serious errors in the evaluation of
experimental results. The present, very clearly written,
first part develops the thermodynamic theory of electrocapillarity, explains the fundamental postulates concerning
the structure of the double layer, and in this way establishes
the basis for the treatment of kinetics planned for the second
F. v. Sturm
[NB 651 IE]
part.
Registered names, trademarks. etc. used in this journal, even wirhout specific indication thereoh are nor to be considered unprorected b y law.
0 Verlag Chemie, GmbH, Weinheim/Bergstr.
1968. - Printed in Germany by Druckerei Winter, Heidelberg.
All rights reserved. N o part of this journal may be reproduced in any form whatsoever, e.g. by photoprint, microfilm, or any other means, without
written permission from the publishers.
Editorial office: 6900 Heidelberg 1, Ziegelbauser Landstrasse 35, Germally, Telephone 24975, Telex 46 1855 kemia d, Cable address: Chemieredaktion
Heidelberg.
Editor: H . Griinewald
‘
Translation Editors: A . J. Racksrraw and A . Srimson.
Publishers: Verlag Chemie, GmbH (Presidents Jiirgen Kreuzhage and Hans Schermer), 6940 WeinheidBergstr., Pappelallee 3, Germany, and
Academic Press Inc. (President Walter J. Johnson), 1 1 1 Fifth Avenue, New York 3, N.Y., USA, and Berkeley Square House, Berkeley Square,
London, W. I . , England.
Correspondence concerning advertisements should be addressed to Verlag Chemie, GmbH. (Advertising Manager W.Thiel) 6940 Weinheim/Bergstr.,
Pappelallee 3, Germany, Telephone Weinheim (06201) 3635. Telex 4655 16 vchwh.
160
Angew. Chem. internat. Edit. I VoZ. 7 (196%) 1 No. 2
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