Liu verena (262 resultados)

Condición: As New. Unread book in perfect condition.

Paperback. Condición: Brand New. 224 pages. German language. 8.23x5.83x0.67 inches. In Stock.

Condición: New.

Condición: As New. Unread book in perfect condition.

Condición: New.

Condición: Brand New. New. US edition. Expediting shipping for all USA and Europe orders excluding PO Box. Excellent Customer Service.

Condición: New. In English.

Condición: Brand New. New. US edition. Expediting shipping for all USA and Europe orders excluding PO Box. Excellent Customer Service.

Condición: New. In English.

Condición: New.

hardcover. Condición: Fine.

Condición: New. 1st ed. 2022 edition NO-PA16APR2015-KAP.

Hardcover. Condición: new. Hardcover. This book, ''Phytochemicals of Pteridophytes: Occurrence, Structures, and Biological Activity'', explores the chemical constituents of pteridophytes (lycophytes and ferns), emphasizing their occurrence, structures, and biological functions. It covers a wide range of phytochemicals, including aromatic compounds (e.g., acylphloroglucinols, flavonoids, lignans, selaginellins) and isoprenoids (e.g., monoterpenoids, norisoprenoids, sesquiterpenoids, diterpenoids, and steroids). The book examines the distribution of these compounds across various pteridophyte genera and species, highlights their structural diversity, and outlines their pharmacological properties. It also compares the phytochemical profiles of pteridophytes with those of algae and bryophytes. This book, ''Phytochemicals of Pteridophytes: Occurrence, Structures, and Biological Activity'', explores the chemical constituents of pteridophytes (lycophytes and ferns), emphasizing their occurrence, structures, and biological functions. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.…

Hardcover. Condición: Brand New. 250 pages. 9.26x6.11 inches. In Stock.

Taschenbuch. Condición: Neu. Antimalarial Natural Products | A. Douglas Kinghorn (u. a.) | Taschenbuch | Progress in the Chemistry of Organic Natural Products | ix | Englisch | 2023 | Springer | EAN 9783030898755 | Verantwortliche Person für die EU: Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg, juergen[dot]hartmann[at]springer[dot]com | Anbieter: preigu.…

Paperback. Condición: Brand New. 115 pages. 9.25x6.10x0.35 inches. In Stock.

Condición: New. In English.

Hardcover. Condición: new. Hardcover. This book, ''Phytochemicals of Pteridophytes: Occurrence, Structures, and Biological Activity'', explores the chemical constituents of pteridophytes (lycophytes and ferns), emphasizing their occurrence, structures, and biological functions. It covers a wide range of phytochemicals, including aromatic compounds (e.g., acylphloroglucinols, flavonoids, lignans, selaginellins) and isoprenoids (e.g., monoterpenoids, norisoprenoids, sesquiterpenoids, diterpenoids, and steroids). The book examines the distribution of these compounds across various pteridophyte genera and species, highlights their structural diversity, and outlines their pharmacological properties. It also compares the phytochemical profiles of pteridophytes with those of algae and bryophytes. This book, ''Phytochemicals of Pteridophytes: Occurrence, Structures, and Biological Activity'', explores the chemical constituents of pteridophytes (lycophytes and ferns), emphasizing their occurrence, structures, and biological functions. Shipping may be from our UK warehouse or from our Australian or US warehouses, depending on stock availability.…

Condición: New. In English.

Condición: New.

Hardcover. Condición: new. Hardcover. This book describes a unique class of secondary metabolites, the mono- and dimeric-naphthylisoquinoline alkaloids. They exclusively occur in lianas of the palaeotropical Ancistrocladaceae and Dioncophyllaceae plant families. Their unprecedented structures include stereogenic centers and rotationally hindered, and therefore stereogenic, axes. Extended recent investigations on six Ancistrocladus species from Asia, as reported in this contribution, shed light on their fascinating phytochemical productivity, with over 100 intriguing natural products. This high chemodiversity arises from a similarly unique biosynthesis from acetate-malonate units, following a novel polyketidic pathway to plant-derived isoquinoline alkaloids. Some of the compounds show most promising anti-parasitic activities. Additionally, strategies for the regio- and stereoselective total synthesis of the alkaloids, including the directed construction of the chiral axis, are also presented. This book describes a unique class of secondary metabolites, the mono- and dimeric-naphthylisoquinoline alkaloids. This high chemodiversity arises from a similarly unique biosynthesis from acetate-malonate units, following a novel polyketidic pathway to plant-derived isoquinoline alkaloids. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.…

Condición: New.

Condición: New. 1st ed. 2022 edition NO-PA16APR2015-KAP.

Hardback. Condición: New. 2022 ed. This volume consists of four chapters that cover a structurally diverse range of naturally occurring compounds. Chapter 1 delves into the chemistry of pyrogallols and their oxidized products, the hydroxy-o-quinones, including their role in cycloaddition reactions in the chemical synthesis of several fungal metabolites. Chapter 2 provides an in-depth description of the constituents of agarwood essential oil and smoke samples that are used in the perfumery industry, with an emphasis on the sesquiterpenoid and chromones constituents so far known. Chapter 3 discusses the defensive chemical ecology of two North American newt species that both produce tetrodotoxin, a well-known neurotoxin that causes paralysis and death in metazoans by disrupting electrical signals in the nerves and muscles. Chapter 4 discusses the limonoids and triterpenoids from the genus Walsura of the plant family Meliaceae, of which a number of species are utilized in several southeastern Asian countries in systems of folk medicine.…

Hardcover. Condición: new. Hardcover. This volume explores the DielsAlder reaction, a cornerstone of organic chemistry, tracing its evolution from a classical synthesis tool to a versatile platform for constructing complex molecular architectures. It highlights the reactions historical significance, methodological advancements, and pivotal role in natural product synthesis. From its discovery in the early 20th century, the DielsAlder reaction revolutionized organic synthesis by enabling efficient formation of six-membered rings with remarkable stereoselectivity and regioselectivity. Over the decades, innovations such as asymmetric catalysis, organocatalysis, and inverse-electron-demand variants have expanded its scope, allowing precise synthesis of highly functionalized frameworks. The volume delves into biomimetic applications, showcasing how the reaction emulates biosynthesis pathways, bridging chemical synthesis and natural product biogenesis. It also examines the groundbreaking discovery of DielsAlderases, enzymes that catalyze pericyclic reactions in Nature, offering insights into biosynthesis and biocatalysis. Through detailed case studies, the volume illustrates the reactions strategic importance in tackling synthesis challenges posed by intricate natural products. Looking ahead, the volume discusses emerging applications in sustainable chemistry, photochemical activation, and enzyme engineering, emphasizing the adaptability and enduring relevance of this reaction. By integrating modern computational tools and cross-coupling strategies, the DielsAlder reaction continues to inspire innovation, solidifying its place as a cornerstone of chemical synthesis and retrosynthesis planning. The volume delves into biomimetic applications, showcasing how the reaction emulates biosynthesis pathways, bridging chemical synthesis and natural product biogenesis. Shipping may be from multiple locations in the US or from the UK, depending on stock availability. …

Condición: New. In English.

Hardcover. Condición: new. Hardcover. This book, ''Phytochemicals of Pteridophytes: Occurrence, Structures, and Biological Activity'', explores the chemical constituents of pteridophytes (lycophytes and ferns), emphasizing their occurrence, structures, and biological functions. It covers a wide range of phytochemicals, including aromatic compounds (e.g., acylphloroglucinols, flavonoids, lignans, selaginellins) and isoprenoids (e.g., monoterpenoids, norisoprenoids, sesquiterpenoids, diterpenoids, and steroids). The book examines the distribution of these compounds across various pteridophyte genera and species, highlights their structural diversity, and outlines their pharmacological properties. It also compares the phytochemical profiles of pteridophytes with those of algae and bryophytes. This book, ''Phytochemicals of Pteridophytes: Occurrence, Structures, and Biological Activity'', explores the chemical constituents of pteridophytes (lycophytes and ferns), emphasizing their occurrence, structures, and biological functions. Shipping may be from our Sydney, NSW warehouse or from our UK or US warehouse, depending on stock availability.…

Taschenbuch. Condición: Neu. Druck auf Anfrage Neuware - Printed after ordering - This volume begins with a short history of malaria and follows with a summary of its biology. It then traces the fascinating history of the discovery of quinine for malaria treatment, and then describes quinine's biosynthesis, its mechanism of action, and its clinical use, concluding with a discussion of synthetic antimalarial agents based on quinine's structure. It also covers the discovery of artemisinin and its development as the source of the most effective current antimalarial drug, including summaries of its synthesis and biosynthesis, its mechanism of action, and its clinical use and resistance. A short discussion of other clinically used antimalarial natural products leads to a detailed treatment of additional natural products with significant antiplasmodial activity, classified by compound type. Although the search for new antimalarial natural products from Nature's combinatorial library is challenging, it is very likely to yield new antimalarial drugs. This book thus ends byidentifying ten natural products with development potential as clinical antimalarial agents.…

Condición: New. A brand new book in pristine condition. Showing zero signs of shelf wear, creases, or damage.

Hardcover. Condición: new. Hardcover. This volume explores the DielsAlder reaction, a cornerstone of organic chemistry, tracing its evolution from a classical synthesis tool to a versatile platform for constructing complex molecular architectures. It highlights the reactions historical significance, methodological advancements, and pivotal role in natural product synthesis. From its discovery in the early 20th century, the DielsAlder reaction revolutionized organic synthesis by enabling efficient formation of six-membered rings with remarkable stereoselectivity and regioselectivity. Over the decades, innovations such as asymmetric catalysis, organocatalysis, and inverse-electron-demand variants have expanded its scope, allowing precise synthesis of highly functionalized frameworks. The volume delves into biomimetic applications, showcasing how the reaction emulates biosynthesis pathways, bridging chemical synthesis and natural product biogenesis. It also examines the groundbreaking discovery of DielsAlderases, enzymes that catalyze pericyclic reactions in Nature, offering insights into biosynthesis and biocatalysis. Through detailed case studies, the volume illustrates the reactions strategic importance in tackling synthesis challenges posed by intricate natural products. Looking ahead, the volume discusses emerging applications in sustainable chemistry, photochemical activation, and enzyme engineering, emphasizing the adaptability and enduring relevance of this reaction. By integrating modern computational tools and cross-coupling strategies, the DielsAlder reaction continues to inspire innovation, solidifying its place as a cornerstone of chemical synthesis and retrosynthesis planning. The volume delves into biomimetic applications, showcasing how the reaction emulates biosynthesis pathways, bridging chemical synthesis and natural product biogenesis. Shipping may be from our UK warehouse or from our Australian or US warehouses, depending on stock availability. …