CRC Handbook of Terpenoids Triterpenoids Volume II: Pentacyclic and Hexacyclic Triterpenoids Editor Sukh Dev Authors Sukh Dev Malti-Chem Research Centre Nandesari, Vadodara India Amrit Sagar Gupta Retired National Chemical Laboratory Pune India Sarita A. Patwardhan National Chemical Laboratory Pune India Boca Raton London New York CRC Press is an imprint of the Taylor & Francis Group, an informa business First published 1989 by CRC Press Taylor & Francis Group 6000 Broken Sound Parkway NW, Suite 300 Boca Raton, FL 33487-2742 Reissued 2018 by CRC Press © 1989 by CRC Press, Inc. CRC Press is an imprint of Taylor & Francis Group, an Informa business No claim to original U.S. Government works This book contains information obtained from authentic and highly regarded sources. Reasonable efforts have been made to publish reliable data and information, but the author and publisher cannot assume responsibility for the validity of all materials or the consequences of their use. The authors and publishers have attempted to trace the copyright holders of all material reproduced in this publication and apologize to copyright holders if permission to publish in this form has not been obtained. If any copyright material has not been acknowledged please write and let us know so we may rectify in any future reprint. Except as permitted under U.S. Copyright Law, no part of this book may be reprinted, reproduced, transmitted, or utilized in any form by any electronic, mechanical, or other means, now known or hereafter invented, including photocopying, microfilming, and recording, or in any information storage or retrieval system, without written permission from the publishers. For permission to photocopy or use material electronically from this work, please access www.copyright.com (http://www.copyright. com/) or contact the Copyright Clearance Center, Inc. (CCC), 222 Rosewood Drive, Danvers, MA 01923, 978-750-8400. CCC is a not- for-profit organization that provides licenses and registration for a variety of users. For organizations that have been granted a photocopy license by the CCC, a separate system of payment has been arranged. Trademark Notice: Product or corporate names may be trademarks or registered trademarks, and are used only for identification and explanation without intent to infringe. Library of Congress Cataloging-in-Publication Data Dev, Sukh, 1925- CRC handbook of terpenoids--Triterpenoids. Includes bibliographies and indexes. Vol. 2 has authors, Sukh Dev, Amrit Sagar Gupta, Sarita A. Patwardhan. Contents: v. 1. Acyclic, monocyclic, bicyclic, tricyclic, and tetraycyclic terpenoids -- v. 2. Penta- cyclic and hexacyclic triterpenoids. 1. Terpenes. I. Nagasampagi, Bhimsen A. II. Gupta, Amrit Sagar. III. Patwardhan, Sarita A. IV. Title: Handbook of terpenoids. QD416.D49 1989 547.7’1 89.9956 ISBN 0-8493-3611-2 (v. 1) ISBN 0-8493-3612-0 (v. 2) A Library of Congress record exists under LC control number: 89009956 Publisher’s Note The publisher has gone to great lengths to ensure the quality of this reprint but points out that some imperfections in the original copies may be apparent. Disclaimer The publisher has made every effort to trace copyright holders and welcomes correspondence from those they have been unable to contact. ISBN 13: 978-1-315-89366-2 (hbk) ISBN 13: 978-1-351-07276-2 (ebk) Visit the Taylor & Francis Web site at http://www.taylorandfrancis.com and the CRC Press Web site at http://www.crcpress.com PREFACE Around 1950, a new era in natural products chemistry can be considered to have begun. Aided by more and more effective techniques of separation, and increasingly useful spec- troscopic methods, structures of natural products have been accumulating at an overwhelming rate. This is certainly true of terpenoids, one of the most widely distributed and important class of the so-called secondary metabolites. Terpenoids have singularly enriched organic chemistry by its variety of structural types, by its wealth of 'unexpected' reactions, rear- rangements and spectral features, and by offering exciting targets for synthesis. Much imaginative experimental work has been invested in exploring their natural pathways. Recent years have revealed an increasingly important biological and ecological role for several of its members. In view of these advances workers in this area have often felt a need for a sort of Handbook, pinpointing salient features of known information, in a format which is at once accessible and readable. The present work is in continuation of the effort in that direction. A total of four sections covering the following categories are planned: • Monoterpenoids • Sesquiterpenoids • Diterpenoids • Triterpenoids Steroids, carotenoids and certain classes of meroterpenoids (for example, indole alkaloids) have been kept outside the purview of the present work. Each section will consist of two or more volumes. Two volumes covering Monoterpenoids appeared in mid-1982. Four volumes embracing Diterpenoids were published in 1985 to 1986. The present work covers Triterpenoids in two volumes: • Volume I: Acyclic, Monocyclic, Bicyclic, Tricyclic, and Tetracyclic • Volume II: Pentacyclic, and Hexacyclic Every effort has been made to cover naturally occurring compounds which have appeared in accessible literature until the end of 1982. However, it will be unrealistic not to expect errors and omissions in a work of this magnitude and the authors will be grateful to the discerning readers for drawing their attention to these. Besides the Catalog Section which forms the bulk of this work, a chapter entitled "General Introduction", which surveys the development of triterpenoid chemistry, has been included. A selected list of references to books, reviews, and key papers dealing with various aspects of triterpenoid chemistry has also been added and should prove useful. The authors would like to express their thanks to Shri. Arun P. Dindorkar for drawing structures, to Shri. R. Kuttappan for typing almost all the manuscript, and to Shri. J. R. Patel for checking the same. Finally, once again, I would like to thank Shashi Prabha, my wife, for all the understanding and moral support which made the undertaking of this work possible. Sukh Dev Nandesari, Vadodara November 1986 THE EDITOR Sukh Dev was born in Chakwal, now in Pakistan, in 1923. He studied at Dayanand Anglo Vedic College, Lahore (B.Sc. Hons., M.Sc.), and later at the Indian Institute of Science, Bangalore (Ph.D., D.Sc.). He served as a Research Associate and Lecturer at the Indian Institute of Science, and for one year (1957) as a Research Associate at the University of Illinois, Urbana, before taking over as Head of the Division of Organic Chemistry (Natural Products) at the National Chemical Laboratory, Poona, in 1960. In 1974, he moved to the newly created Malti-Chem Research Centre as its Research Director. In 1989 he moved to the Indian Institute of Technology, Delhi, as an INSA Research Professor. Sukh Dev has been a Visiting Professor at the Stevens Institute of Technology, Hoboken in 1968, at the University of Georgia, Athens in 1969, and at the University of Oklahoma, Norman in 1970 to 1971. He has been an invited speaker at several International Symposia and Seminars at many Universities/Research Institutes in several countries of the world. He is the recipient of many National awards and in 1980 received the Ernest Guenther Award of the American Chemical Society. He was elected President of the Indian Chemical Society for the term 1978 to 1979. In 1987 he was elected President of the Organic Chemistry Division Committee of the International Union of Pure & Applied Chemistry for the term 1987 to 1989. His research interests include natural products chemistry, especially terpenoids and Ayurvedic medicinal plants, azulenes and other nonbenzenoid aromatic systems, organic synthesis, and new technology development. He has contributed over 270 research papers and articles, and holds 48 patents. He is author of several books and book chapters. THE AUTHORS Amrit Sagar Gupta, born on November 1, 1925, had his early education at Lahore (B.Sc., Hons, Panjab University, 1946) and received his M.Sc. (Hons) and Ph.D degrees from Panjab University, Chandigarh. Gupta joined the Natural Chemical Laboratory in October 1948 in the Division of Organic Chemistry where he worked in various fields until the date of his retirement in October 1985. He has published more than 45 papers in national and international journals. For 2 years (1966 to 1968), Gupta was Research Associate at the University of Illinois Urbana, in the Laboratory of Professor N. J. Leonard. In 1982, he spent 6 weeks at the Institute of Organic Chemistry and Biochemistry, Czechoslovak Academy of Science, Prague under a bilateral exchange program. His particular field of interest has been the chemistry of natural products. Mrs. Sarita A. Patwardhan received her B.Sc. (Hons.) (1958), M.Sc. (1960) and Ph.D. (1966) from Bombay University. She worked for her Ph.D at the National Chemical Lab- oratory, Pune, India. Mrs. Patwardhan, at present, is working as a Senior Scientist in the Division of Organic Chemistry in National Chemical Laboratory, Pune. She has published over 30 research papers, review articles, and chapters. Her current research interests are isolation of bio-active compounds from renewable resources, as well as their synthesis. To Our Parents TABLE OF CONTENTS Volume I GENERAL INFORMATION AND SKELETAL-TYPE INDEX General Remarks on the Use of the Book 3 General Introduction 7 Skeletal-Type Index 63 ACYCLIC TRITERPENOIDS 73 MONOCYCLIC TRITERPENOIDS 83 BICYCLIC TRITERPENOIDS 87 TRICYCLIC TRITERPENOIDS 91 TETRACYCLIC TRITERPENOIDS 113 GENERAL BIBLIOGRAPHY 541 INDEXES Compound Index 553 Species Index 569 Volume II GENERAL INFORMATION AND SKELETAL-TYPE INDEX General Remarks on the Use of the Book 3 General Introduction 7 Skeletal-Type Index 63 PENTACYCLIC TRITERPENOIDS 73 HEXACYCLIC TRITERPENOIDS 585 GENERAL BIBLIOGRAPHY 589 INDEXES Compound Index 601 Species Index 619 General Information and Skeletal-Type Index