Naturally occurring quinones (38 resultados)

Condición: Poor. This is an ex-library book and may have the usual library/used-book markings inside.This book has hardback covers. In poor condition, suitable as a reading copy. No dust jacket. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,1450grams, ISBN:012689650X.…

Paperback or Softback. Condición: New. Naturally Occurring Quinones. Book.

Hardcover. Condición: Fair. Aus einer Bibliothek ausgesondert/ Stempel; Leichte Verschmutzung / Farbtonveränderung; Starke Gebrauchsspuren. Naturally Occurring Quinones aims to discuss where quinones, a major group of organic compounds that are considered as pigments, can be found in nature. The book also explains its significance in chemistry and other related fields. The text also mentions the different plant and animal origins of these compounds. The book covers the biogenesis and distribution of these organic compounds; their identification and spectra; and the different kinds of quinolones, which include benzoquinones, naphthaquinones, julichromes, and laccaic acids. The text also elaborates on anthracyclinones and their stereochemistry; extended quinolones, including elsinochromes, erythroaphins, xanthoaphins, chrysoaphins, and aphinins; and miscellaneous quinolones, such as royleanones, tanshinones, isotanshinones, and mitomycins. The text is recommended for students and practitioners in the field of chemistry, biochemistry, and biology, especially those who want to further understand quinolones, their importance in nature and different species, and their possible uses.…

Hardcover. Condición: Very Good. Estado de la sobrecubierta: Fair. 012689650X. Grey cloth hardcover, in a jacket that has shelf wear, colour fade on spine, from closed Astra Zeneca company library. 734 pages, index, illustrated with charts, tables and diagrams. Contents clean, tight and bright. Book. …

Condición: Good. This is an ex-library book and may have the usual library/used-book markings inside.This book has hardback covers. Clean from markings. In good all round condition. No dust jacket. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,700grams, ISBN.…

Hardcover. Condición: Fair. No Dustjacket. Later Edition. ISBN . Hardback. No Dustjacket. Reading Copy Only. Ex-Library with the usual faults, card pocket, ink stamps, etc. Tight sound copy with average wear. No statement of later printing on copyright page. No Signature.

Condición: Good. This is an ex-library book and may have the usual library/used-book markings inside.This book has hardback covers. In good all round condition. No dust jacket. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,700grams, ISBN.

Paperback. Condición: Brand New. 744 pages. 9.25x6.00x1.68 inches. In Stock.

Condición: New.

Taschenbuch. Condición: Neu. Studies on Naturally Occurring and Synthetic Quinones | Chemistry of quinones | C. P. Pokharna | Taschenbuch | 192 S. | Englisch | 2020 | LAP LAMBERT Academic Publishing | EAN 9786202530941 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu. …

paperback. Condición: New. NEW. SHIPS FROM MULTIPLE LOCATIONS. book.

Second Edition.. VII, 734 Seiten mit zahlreichen Abbildungen, 012689650X Sprache: Englisch Gewicht in Gramm: 1380 Groß 8°, Original-Pappband (Hardcover), Vorsatz mit kleinem montiertem Besitzvermerk, Schnitt minimal stockfleckig, insgesamt gutes und innen sauberes Exemplar, Intent with small mounted ownership, (cut minimal foxing, overall good and clean inside copy).…

hardcover. Condición: Good. Good. Dust Jacket NOT present. CD WILL BE MISSING. . SHIPS FROM MULTIPLE LOCATIONS. book.

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

Condición: Good. Your purchase helps support Sri Lankan Children's Charity 'The Rainbow Centre'. Ex-library, so some stamps and wear, but in good overall condition. Our donations to The Rainbow Centre have helped provide an education and a safe haven to hundreds of children who live in appalling conditions.…

Condición: New.

Condición: New. In English.

Condición: New. In English.

Condición: New. In English.

Taschenbuch. Condición: Neu. Druck auf Anfrage Neuware - Printed after ordering - The preceding volume appeared in 1987 and covered the literature up to the end of 1984. The present work extends the coverage to the end of 1994 with a sprinkling of references to 1995 papers. Nearly 900 new qui nones are described, including one or two which were overlooked previously, together with new work on older compounds. For each new quinone information is provided on the distribution, spectra, structure and chemistry, and on biosynthesis where available. Sadly, there is very little new chemistry, as structures are now elucidated almost entirely by spectroscopic methods and X-ray analysis. As always I am grateful to many colleagues who sent me papers and other information in advance of publication. 1972 and 1987 volumes are referred to as NOQ II and NOQ III, The respectively. In the spectroscopic data the notation ( ) indicates that informa tion is missing or is dubious. R.H.T. Aberdeen, November 1995 1 Benzoquinones 1 New sources of p-benzoquinone are the cephalic glands of Eucera bees and 2 Arthrobacter bacteria and it is part ofthe defensive secretion ofthe caterpillar 3 Romalea guttata. However, the natural occurrence of o-benzoquinone has not been reported and is unlikely. Simple monosubstituted o-benzoquinones occur 4 only as transient metabolic intermediates. It has been shown that in the leaves of X anthium occidentale (Compositae) chlorogenic acid is in equilibrium with a small amount of the corresponding o-quinone but the latter has not been isolated.…

Condición: gut. 1971. Naturally Occurring Quinones. In englischer Sprache. pages.

Buch. Condición: Neu. Neuware - This book should be of interest to organic and biological chemists in universities, professional research chemists in pharmaceutical and dye industries.

Buch. Condición: Neu. Neuware - The preceding volume appeared in 1987 and covered the literature up to the end of 1984. The present work extends the coverage to the end of 1994 with a sprinkling of references to 1995 papers. Nearly 900 new qui nones are described, including one or two which were overlooked previously, together with new work on older compounds. For each new quinone information is provided on the distribution, spectra, structure and chemistry, and on biosynthesis where available. Sadly, there is very little new chemistry, as structures are now elucidated almost entirely by spectroscopic methods and X-ray analysis. As always I am grateful to many colleagues who sent me papers and other information in advance of publication. 1972 and 1987 volumes are referred to as NOQ II and NOQ III, The respectively. In the spectroscopic data the notation ( ) indicates that informa tion is missing or is dubious. R.H.T. Aberdeen, November 1995 1 Benzoquinones 1 New sources of p-benzoquinone are the cephalic glands of Eucera bees and 2 Arthrobacter bacteria and it is part ofthe defensive secretion ofthe caterpillar 3 Romalea guttata. However, the natural occurrence of o-benzoquinone has not been reported and is unlikely. Simple monosubstituted o-benzoquinones occur 4 only as transient metabolic intermediates. It has been shown that in the leaves of X anthium occidentale (Compositae) chlorogenic acid is in equilibrium with a small amount of the corresponding o-quinone but the latter has not been isolated.…

Condición: New. This book should be of interest to organic and biological chemists in universities, professional research chemists in pharmaceutical and dye industries. Num Pages: 742 pages, biography. BIC Classification: PNN. Category: (P) Professional & Vocational; (UP) Postgraduate, Research & Scholarly; (UU) Undergraduate. Dimension: 234 x 156 x 39. Weight in Grams: 1221. . 1987. 3 Rev ed. Hardback. . . . . Books ship from the US and Ireland. …

Condición: New. This book should be of interest to organic and biological chemists in universities, professional research chemists in pharmaceutical and dye industries. Num Pages: 742 pages, biography. BIC Classification: PNN. Category: (P) Professional & Vocational; (UP) Postgraduate, Research & Scholarly; (UU) Undergraduate. Dimension: 234 x 156 x 39. Weight in Grams: 1221. . 1987. 3 Rev ed. Hardback. . . . . …

Condición: New. Biogenesis. Benzoquinones. Napthoquinones. Anthraquinones. Anthracyclinones. Other aromatic polycyclic quinones. Miscellaneous quinones. Diterpenoid quinones. N-hetercyclic quinones. Ansa-quinones. Botanical index. Zoological index. Subject index.

Condición: New. KlappentextrnrnThis book should be of interest to organic and biological chemists in universities, professional research chemists in pharmaceutical and dye industries.

Condición: very good. London : Butterworth, 1957. Original hardcover binding with dustjacket. vii, 302 pp. Organic chemistry monographs. 22cm. Condition : very good copy. Keywords : , chemistry.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Many synthetic as well as natural products containing the quinone functionality have displayed useful chemotherapeutic activity. Benzoyl/naphthoyl/thienoyl-1,4-benzoquinones have emerged as potential building blocks for the synthesis of medicinally significant anthracyclinones. Anthracyclinones are valuable drugs in the treatment of certain human cancers. The 1,4-benzoquinones are strong electrophiles in the Diels-Alder reactions with variously substituted 1,3-butadienes. This property of quinones has been of great synthetic value.Encouraged by remarkable achievements in the field of naturally occurring as well as synthetic quinones , a systematic study of quinones including their isolation and synthesis have been undertaken. In the present study isolation of quinones from Tecomellaundulata, synthesis of rhinacanthin-A (a naphthoquinone) from lapachol and a number of benzoyl-1,4-benzoquinones were synthesized which are good precursors for the Diels-Alder reaction with various dienes and therefore, this approach may further be extended to the synthesis of anthracyclinones. 192 pp. Englisch.…

Taschenbuch. Condición: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - Many synthetic as well as natural products containing the quinone functionality have displayed useful chemotherapeutic activity. Benzoyl/naphthoyl/thienoyl-1,4-benzoquinones have emerged as potential building blocks for the synthesis of medicinally significant anthracyclinones. Anthracyclinones are valuable drugs in the treatment of certain human cancers. The 1,4-benzoquinones are strong electrophiles in the Diels-Alder reactions with variously substituted 1,3-butadienes. This property of quinones has been of great synthetic value.Encouraged by remarkable achievements in the field of naturally occurring as well as synthetic quinones , a systematic study of quinones including their isolation and synthesis have been undertaken. In the present study isolation of quinones from Tecomellaundulata, synthesis of rhinacanthin-A (a naphthoquinone) from lapachol and a number of benzoyl-1,4-benzoquinones were synthesized which are good precursors for the Diels-Alder reaction with various dienes and therefore, this approach may further be extended to the synthesis of anthracyclinones.…