Chemistry and Biological Activity of Steroids

Chemistry and Biological Activity of Steroids PDF

Author: Jorge António Ribeiro Salvador

Publisher: BoD – Books on Demand

Published: 2020-02-26

Total Pages: 144

ISBN-13: 1789855152

DOWNLOAD EBOOK →

The steroid scaffold continues to be the structural basis of new drugs for a variety of targets and diseases. Indeed, steroids interact with enzymes and receptors in a strikingly specific manner. Chemistry and Biological Activity of Steroids aims to provide an updated overview of recent advances in the medicinal chemistry of steroids. Novel synthetic methods in the steroids field, including steroid biotransformations, new steroids able to tackle steroid receptors, and steroid enzymes with clinical relevance, are critically reviewed in this book. Furthermore, the diverse physiopathological roles of oxysterols and their therapeutic value are also discussed.

Molecular Structure and Biological Activity of Steroids

Molecular Structure and Biological Activity of Steroids PDF

Author: Martin Bohl

Publisher: CRC Press

Published: 2018-01-18

Total Pages: 483

ISBN-13: 1351083252

DOWNLOAD EBOOK →

Molecular Structure and Biological Activity of Steroids focuses on the indentification of steroid structural features that control particular biological effects. Steroid geometry plays a critical role in steroid activity; therefore, the results of X-ray crystallographic, NMR spectroscopic, and theoretical studies on structure-activity relationships form an integral part of the book. Well-established observations and proposed models are presented, summarizing knowledge of molecular features (e.g., steroid backbone structures, side-chain constitutions, substitution sites, configurations, hydrogen-bonding patterns) that can affect steroid action. The book also provides overviews about recent progress in various frontier fields of steroid research, including such areas as sex steroids, glucocorticoids, aromatase inhibitors, vitamin D metabolites, brassinosteroids, neuromuscular blocking agents, and cardiotonic steroids. Molecular Structure and Biological Activity of Steroids is a "must-have" resource for biochemists, pharmacologists, endocrinologists, biophysicists, and others actively involved in steroid research.

Steroid Chemistry at a Glance

Steroid Chemistry at a Glance PDF

Author: Daniel Lednicer

Publisher: John Wiley & Sons

Published: 2011-06-20

Total Pages: 154

ISBN-13: 111995729X

DOWNLOAD EBOOK →

The term steroid has become virtually synonymous with drug abuse in sport to the majority of the public. However these steroids - androgens - actually comprise only a single relatively small class of biologically active steroids, and are overshadowed by a large collection of compounds, a sizeable number of which are commercial drugs that share the same structural carbon skeleton. The development of these drugs has led to a large body of organic chemistry often denoted as "Steroid Chemistry". Steroid Chemistry At A Glance provides a concise overview of the main principles and reactions of steroid chemistry. Topics covered include: history, isolation and structure determination of steroids steroid nomenclature and stereochemistry natural sources of steroids synthesis and reactions of aromatic a-ring steroids, androstanes, and pregnanes steroids with a spirolactone at position 17 steroids with hetrocyclic ring A compounds derived from cholesterol Based on the highly successful and student friendly "at a glance" approach, the information is presented in integrated, self contained double page spreads of text and illustrative material. Students of chemistry and pharmacy using Steroid Chemistry at a Glance will find they have a resource with which they can quickly, concisely and confidently acquire, regularly review and revise the basic facts that underpin the properties, synthesis and reactions of this important class of natural products. It will also serve as a handy bench reference for postgraduates and professional chemists.

Steroid Compounds with Potential Biological Activity

Steroid Compounds with Potential Biological Activity PDF

Author: Marina Savic

Publisher: Mdpi AG

Published: 2023-12-26

Total Pages: 0

ISBN-13: 9783036596174

DOWNLOAD EBOOK →

Steroids are a large group of compounds whose structure is based on a 17-carbon skeleton, with a specific cyclopentanoperhydrophenanthrene ring system. Natural steroids have been fine-tuned through evolution to build membranes; act as chemical messengers that regulate metabolic, immune and reproductive functions in animals and stimulate the growth of, or otherwise protect, animal organisms. The steroid core represents a suitable motive for structural modifications. Therefore, a large group of semi-synthetic steroid derivatives have occupied the attention of synthetic chemists as well as medicinal chemists due to their potential biological activity, including anticancer, antibacterial, anti-inflammatory and (anti)hormonal activities. This Reprint of the Special Issue of Molecules titled "Steroid Compounds with Potential Biological Activity" is dedicated to both experimental and theoretical studies on steroid chemistry, structural biology, biosynthesis, metabolism, and pharmacology. The Issue focuses on the isolation and synthesis of steroid compounds, diverse in origin, as well as their structural characterization and identification. Published articles and reviews relate to in vitro and in silico studies of the pharmacological properties, molecular biology, biochemistry and structural biology of steroids.

Steroid Dimers

Steroid Dimers PDF

Author: Professor Satyajit D. Sarker

Publisher: John Wiley & Sons

Published: 2012-04-13

Total Pages: 414

ISBN-13: 1119972841

DOWNLOAD EBOOK →

Steroid dimers are an important group of compounds produced by various marine organisms, and also synthesized in the laboratories. This group of compounds possesses various pharmacological and biological properties, and can also be used to create “molecular umbrellas” for drug delivery. Steroid Dimers: Chemistry and Applications in Drug Design and Delivery provides an up-to-date overview on the chemistry and applications of steroid dimers of natural and synthetic origins. The book includes easy-to-follow synthetic protocols for various classes of important dimeric steroids, source details, valuable spectroscopic data and depiction of unique structural features of natural steroidal dimers, and the Structure-Activity-Relationships (SARs) of some pharmacologically active dimeric steroids. Topics covered include: introduction to steroid dimers synthesis and chemistry of noncyclic and cyclic steroid dimers naturally occurring steroid dimers – cephalostatins, ritterazines and crellastatins biological and pharmacological functions of steroid dimers and their application in drug design and discovery steroid dimers as “molecular umbrellas” for drug delivery Steroid Dimers: Chemistry and Applications in Drug Design and Delivery is an essential guide to this important class of natural and synthetic compounds for researchers and students of natural products chemistry and biochemistry, synthetic organic and medicinal chemistry, and drug design, discovery and delivery.

Holland-Frei Cancer Medicine

Holland-Frei Cancer Medicine PDF

Author: Robert C. Bast, Jr.

Publisher: John Wiley & Sons

Published: 2017-03-10

Total Pages: 2004

ISBN-13: 111900084X

DOWNLOAD EBOOK →

Holland-Frei Cancer Medicine, Ninth Edition, offers a balanced view of the most current knowledge of cancer science and clinical oncology practice. This all-new edition is the consummate reference source for medical oncologists, radiation oncologists, internists, surgical oncologists, and others who treat cancer patients. A translational perspective throughout, integrating cancer biology with cancer management providing an in depth understanding of the disease An emphasis on multidisciplinary, research-driven patient care to improve outcomes and optimal use of all appropriate therapies Cutting-edge coverage of personalized cancer care, including molecular diagnostics and therapeutics Concise, readable, clinically relevant text with algorithms, guidelines and insight into the use of both conventional and novel drugs Includes free access to the Wiley Digital Edition providing search across the book, the full reference list with web links, illustrations and photographs, and post-publication updates

Biological Activities of Steroids in Relation to Cancer

Biological Activities of Steroids in Relation to Cancer PDF

Author: Gregory Pincus

Publisher: Academic Press

Published: 2013-09-17

Total Pages: 547

ISBN-13: 1483270572

DOWNLOAD EBOOK →

Biological Activities of Steroids in Relation to Cancer covers the proceedings of the conference sponsored by the Cancer Chemotherapy National Service Center, National Cancer Institute, National Institutes of Health, and the U. S. Department of Health, Education and Welfare. The text focuses on the influence of steroids on medical approaches to the cure of cancer, including steroid chemistry, estrogen metabolism, and mammary cancer. The selection first offers information on steroids growth and cancer, advances in steroid chemistry, and the physiology and pharmacology of steroids affecting tumor growth. Discussions focus on rapid development of mammary cancer, pituitary functions, androgens, estrogens, and progestins. The book also ponders on the binding of steroid hormones by plasma proteins; the effects of steroids on the levels of the plasma 17-hydroxycorticosteroids and the serum protein-bound iodine; and the metabolism of dehydroisoandrosterone. The text evaluates studies on estrogen metabolism, biochemical parameters of estrogen action, and enzymatic transport of hydrogen by estrogenic hormones. The manuscript also elaborates on the fate of steroid estrogens in target tissues, effect of steroids on calcium dynamics, and steroids and experimental mammary cancer. The selection is a valuable source of information for readers interested in the use of steroids in treating cancer.

Steroids

Steroids PDF

Author: Louis Frederick Fieser

Publisher:

Published: 2013-01

Total Pages: 964

ISBN-13: 9781258535421

DOWNLOAD EBOOK →

Molecular Structure and Biological Activity of Steroids

Molecular Structure and Biological Activity of Steroids PDF

Author: Martin Bohl

Publisher: CRC Press

Published: 1992-08-14

Total Pages: 495

ISBN-13: 9780849369551

DOWNLOAD EBOOK →

Molecular Structure and Biological Activity of Steroids focuses on the indentification of steroid structural features that control particular biological effects. Steroid geometry plays a critical role in steroid activity; therefore, the results of X-ray crystallographic, NMR spectroscopic, and theoretical studies on structure-activity relationships form an integral part of the book. Well-established observations and proposed models are presented, summarizing knowledge of molecular features (e.g., steroid backbone structures, side-chain constitutions, substitution sites, configurations, hydrogen-bonding patterns) that can affect steroid action. The book also provides overviews about recent progress in various frontier fields of steroid research, including such areas as sex steroids, glucocorticoids, aromatase inhibitors, vitamin D metabolites, brassinosteroids, neuromuscular blocking agents, and cardiotonic steroids. Molecular Structure and Biological Activity of Steroids is a "must-have" resource for biochemists, pharmacologists, endocrinologists, biophysicists, and others actively involved in steroid research.

Lanterna Rally - Theme by Grace Themes