THE ALKALOIDS Chemistry and Pharmacology VOLUME 42 This Page Intentionally Left Blank THE ALKALOIDS Chemistry and Pharmacology Edited by Geoffrey A. Cordell College of Pharmacy University of Illinois at Chicago Chicago, Illinois VOLUME 42 Academic Press, Inc. Harcourt Brace Jovanovich, Publishers San Diego New York Boston London Sydney Tokyo Toronto This book is printed on acid-free paper. @ Copyright 0 1992 by ACADEMIC PRESS, INC. All Rights Reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Academic Press, Inc. 1250 Sixth Avenue, San Diego, California 92101-4311 United Kingdom Edition published by ACADEMIC PRESS LIMITED 24-28 Oval Road, London NWl 7DX Library of Congress Catalog Number: 50-5522 International Standard Book Number: 0-12-469542-6 PRINTED IN THE UNITED STATES OF AMERICA 929394959697 QW 9 8 1 6 5 4 3 2 1 CONTENTS CONTRIBUTOR.S . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii PREFACE. .............................................................. ix Chapter I. Eburnamine-Vincamine Alkaloids MAURIL OUNASMAAAN D AUTOT OLVANEN I. Introduction . . . . . . . . . . . . . . . . . . . . . . . .................. 2 11. Occurrence . . ............................ ............ 3 111. Syntheses . . . .......................... 3 IV. Reactions ...................................... 81 V. Biosynthesis . . ........................... 83 VI. Spectroscopy . . . . . . . . . . . . . . . . . . . . . . .................. 85 VII. Pharmacology ........................................ 94 VIII. Perspectives . . . . . . . . . . . . . . . . . . . . . . . .................. 104 IX. Addendum ..................................... 104 References .......................... 105 Chapter 2. Antifungal Alkaloids ALICEM . CLARKA ND CHARLEDS . HUFFORD I. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 I7 11. Antifungal Alkaloids from Higher P .................. 120 111. Antifungal Alkaloids from Microo 141 IV. Antifungal Alkaloids from Marine s ......................... 144 . . . . . . . . . . . . . . . . . . . . . . . 145 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146 Chapter 3. Chemistry of the Diterpenoid Alkaloids FENG-PENWG ANGA ND XIAO-TIALNI ANG I. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152 11. Norditerpenoid Alkaloids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153 111. Diterpenoid Alkaloids . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189 IV. Skeletal Conversions of Diterpenoid Alkaloids . . . . , . . . . . . . . . . . . . . . . . . . 240 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242 V vi CONTENTS Chapter 4. Sulfur-Containing Alkaloids JERZY T. WROBELA ND KRYSTYNWA OJTASIEW~CZ I. Introduction ...... ..................... 249 11. Alkaloids with One ............ 250 111. Alkaloids with One Sulfur Atom in the Ring .......................... 257 IV. Alkaloids with More Than One Sulfur Atom ............... 27 I V. Sulfur-Containing Alkaloids with a Peptide Structure ............... 282 VI. Pharmacology ............................... 292 References ................................... 294 CUMULATIVINED EX OF TITLES. .......................................... 299 INDEX ................................................................. 307 CONTRIBUTORS Numbers in parentheses indicate the pages on which the authors’ contributions begin. ALICEM . CLARK(I 17), Department of Pharmacognosy, School of Phar- macy, The University of Mississippi, University, Mississippi 38677 CHARLEDS. HUFFORD(1 17), Department of Pharmacognosy, School of Pharmacy, The University of Mississippi, University, Mississippi 38677 XIAO-TIANL IANG(1 51), Institute of Materia Medica, Chinese Academy of Medical Sciences, Beijing 100050, People’s Republic of China MAURIL OUNASMA(IA), Laboratory for Organic and Bioorganic Chem- istry, Technical University of Helsinki, SF-02150 Espoo, Finland ARTO TOLVANE(Nl) , Laboratory for Organic and Bioorganic Chemistry, Technical University of Helsinki, SF-02 150 Espoo, Finland FENG-PENWGA NG(1 51), Department of Chemistry of Medicinal Natural Products, College of Pharmacy, West China University of Medical Sci- ences, Chengdu, Sichuan 610041, People’s Republic of China KRYSTYNWAO JTASIEWI(C24Z9 ), Department of Chemistry, University of Warsaw, Warsaw, Poland JERZYT . WROBE(L2 49), Department of Chemistry, University of Warsaw, Warsaw, Poland vii This Page Intentionally Left Blank PREFACE With this, Volume 42 of the series “The Alkaloids, Chemistry and Pharmacology,” the editorship formally is transferred. As the new editor of this long-running series, let me first of all thank profusely, Dr. Arnold Brossi, who, over the course of the period 1982-1991 did such a wonder- ful job of not only maintaining the series, but enhancing both the quality of the reviews and the rate of publication. As a result, the reputation of the series is now finer than ever. Arnold, we wish you well in your “semi- retirement” ! The goals for the future of the series are to maintain the outstanding quality of the reviews, to provide such reviews in a timely manner as the interest in various aspects of alkaloid chemistry and biology ebbs and flows, and to examine this broad and diverse group of natural products from some different perspectives. In the past few years we have seen tremendous increases in the level of interest in natural products chemistry in general, and in the field of alkaloid chemistry and biology in particular. While plans are already in hand for the next few volumes, I would be very willing to entertain proposals for future chapters for this series. This volume deals for the most part, with the current status of four groups of alkaloids of substantial biological relevance. Chapter 1 by Lou- nasmaa and Tolvanen, focuses on the “Eburnamine-Vincamine Alka- loids,” and discusses the new alkaloids, and the extensive synthetic and pharmacologic work that has been conducted since the last review in 1981. Clark and Hufford present a review which focuses on the “Antifungal Alkaloids,” especially those compounds that might be important as lead structures for the development of agents useful in treating the opportunis- tic infections associated with AIDS. Wang and Liang bring up-to-date the area of the diterpenoid alkaloids from a chemical perspective. Over the years this large group of alkaloids has produced a fascinating array of molecular gyrations. Finally, Wrobel and Wojtasiewicz revisit the topic of “Sulfur-Containing Alkaloids” (which was last covered in Volume 26) from a chemical and biological perspective. Geoffrey A. Cordell University of Illinois at Chicugo ix