Search Results - "Laatsch, H"

Isolation and synthesis of a novel β-carboline guanidine derivative tiruchanduramine from the Indian ascidian Synoicum macroglossum by Ravinder, K., Vijender Reddy, A., Krishnaiah, P., Ramesh, P., Ramakrishna, S., Laatsch, H., Venkateswarlu, Y.

“…The isolation and synthesis of a novel β-carboline guanidine alkaloid, tiruchanduramine, a potent α-glucosidase inhibitor from the Indian ascidian Synoicum…”
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Des-N-Methylnoracronycine from the roots of Carissa conjesta. Wight by Ganapaty, S, Ch. Bharath, Laatsch, H

“…The methanolic extract of the roots of Carissa conjesta on a sequence of chromatographic techniques afforded a des-N-methylnoracronycine, an acridone alkaloid,…”
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Purification and structure elucidation of the by-product of new regulator of antibiotic production and differentiation of Streptomyces by Matselyukh, B, Mohammadipanah, F, Laatsch, H, Rohr, J, Efremenkova, O, Khilya, V

“…Streptomyces globisporus 1912, a producer of the antitumor antibiotic landomycin E, forms the new low-molecular signaling molecule…”
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Bromoanaindolone, a novel antimicrobial exometabolite from the cyanobacterium Anabaena constricta by Volk, R.-B., Girreser, U., Al-Refai, M., Laatsch, H.

“…A new brominated indole alkaloid, designated as bromoanaindolone, was isolated from culture media of the cyanobacterium Anabaena constricta and was identified…”
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Niruriflavone, a New Antioxidant Flavone Sulfonic Acid from Phyllanthus niruri by Than, N. N., Fotso, S., Poeggeler, B., Hardeland, R., Laatsch, H.

“…A new flavone sulfonic acid 1 named niruriflavone was isolated from the 70% ethanolic extract of the whole plant of Phyllanthus niruri (Euphorbiaceae),…”
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Alkaloids from Oriciopsis glaberrima Engl. (Rutaceae) by Wansi, Jean Duplex, Wandji, Jean, Kamdem Waffo, Alain François, Ngeufa, Happi Emmanuel, Ndom, Jean Claude, Fotso, Serge, Maskey, Rajendra Prasad, Njamen, Dieudonné, Fomum, Tanee Zacharias, Laatsch, Harmut

“…Alkaloid derivatives, oriciacridone A ( 1) and B ( 2), were isolated from the stems bark of Oriciopsis glaberrima Engl., and their structures determined…”
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Prefluostatin and New Urauchimycin Derivatives Produced by Streptomycete Isolates by Yao, C. B. Fondja, Schiebel, M., Helmke, E., Anke, H., Laatsch, H.

“…Guided by chemical screening, two new members of the antimycin group, urauchimycin C (1b) and D (1a), were isolated from the marine-derived Streptomyces sp…”
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Juglorescein, Juglocombins and Juglochromans: Structure of Juglomycin Dimers from Streptomycetes by Lessmann, H., Maskey, R. P., Fotso, S., Lackner, H., Laatsch, H.

“…Novel juglomycin derivatives with a C skeleton were isolated from the Streptomyces strains 815 and GW4184. Juglorescein (1a) and juglocombin A (2a) and B (3a)…”
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Halichondria sulfonic acid, a new HIV-1 inhibitory guanidino-sulfonic acid, and halistanol sulfate isolated from the marine sponge Halichondria rugosa Ridley & Dendy by Jin, Y, Fotso, S, Yongtang, Z, Sevvana, M, Laatsch, H, Zhang, W

“…A new sulfur-containing guanidino derivative, halichondria sulfonic acid (1) showing anti-HIV-1 activity, and halistanol trisulfate (2) with anti-tumor…”
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Isolation and structure elucidation of Diazaquinomycin C from a terrestrial streptomyces sp. and confirmation of the akashin structure by Maskey, R.P., Grün-Wollny, I., Laatsch, H.

“…In the screening of terrestrial Streptomycetes for bioactive components, a new antibiotic designated as diazaquinomycin C (2b) was isolated. The new antibiotic…”
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Juglomycins G-J: Isolation from Streptomycetes and Structure Elucidation by Maskey, R. P., Lessmann, H., Fotso, S., Grün-Wollny, I., Lackner, H., Laatsch, H.

“…From the Streptomyces spp. 815 and GW4184, four new 4-juglon-2-ylbutyric acid derivatives, the juglomycins G - J (3a, 4a, 4c, 5c), have been isolated and…”
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The separation of hypericine and pseudohypericine from Hypericum perforatum L by Smelcerovic, A, Laatsch, H, Lepojevic, Z, Djordjevic, S

“…The extraction of Hypericum perforatum L. was carried out by the method of ultrasonic maceration. The separation of H. perforatum L. extract in order to obtain…”
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Sesquiterpene lactones from Crepis cameroonica (Asteraceae) by Ndom, J. C., Mbafor, J. T., Wansi, J. D., Kamdem, A. W., Meva'a, L. M., Vardamides, J. C., Toukam, F., Pegyemb, D., Ngando, T. M., Laatsch, H., Fomum, Z. T.

“…In addition to one known compound, 3β,8α-dihydroxyguaian-4(15),10(14),11(13)-trien-6,12 olide (8-desacylcynaropicrin) (3), two new sesquiterpene lactones have…”
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Controlling production of brominated cyclic depsipeptides by Pseudoalteromonas maricaloris KMM 636T by Sobolevskaya, M.P., Smetanina, O.F., Speitling, M., Shevchenko, L.S., Dmitrenok, P.S., Laatsch, H., Kuznetsova, T.A., Ivanova, E.P., Elyakov, G.B.

“…Aims:  This study aims at evaluating the impact of the nutrient medium components on the in vitro production of the cytotoxic alterochromides. Methods and…”
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2"-Chartreusin-monoacetate, a New Natural Product with Unusual Anisotropy Effects from the Marine Isolate Streptomyces sp. B5525, and its 4"-Isomer by Maskey, R. P, Pusecker, K, Speitling, M, Monecke, P, Helmke, E, Laatsch, H

“…The marine Streptomycete isolates B5342 and B5525 forms, beside large amounts of the antitumor antibiotic chartreusin (1a), two chartreusin monoacetates as…”
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A Rare Prostaglandin from the Soft Coral Sarcophyton crassocaule of the Indian Ocean by Anjaneyulu, A. S. R, Krishna Murthy, M. V. R, Gowri, P. Mangala, Venugopal, M. J. R. V, Laatsch, Hartmut

“…The rare prostaglandin methyl (5Z)-9,15-dioxoprosta-5,8(12)-dien-1-oate (1), hitherto unreported as a natural product, has been isolated from the Indian Ocean…”
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Metabolites of the Sea Isolate of Bacteria Streptomyces sp. 6167 by Sobolevskaya, M. P., Fotso, S., Havash, U., Denisenko, V. A., Helmke, E., Prokof'eva, N. G., Kuznetsova, T. A., Laatsch, H., Elyakov, G. B.

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Production of dihydroabikoviromycin by Streptomyces anulatus: production parameters and chemical characterization of genotoxicity by HOLMALAHTI, J, RAATIKAINEN, O, VON WRIGHT, A, LAATSCH, H, SPOHR, A, LYNGBERG, O. K, NIELSEN, J

“…The Streptomyces strain Streptomyces anulatus JH801 showed submerged sporulation and production of a genotoxic activity. The genotoxin production of this…”
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Protein Kinase C Is Likely to be Involved in Zoosporogenesis and Maintenance of Flagellar Motility in the Peronosporomycete Zoospores by Islam, Md. Tofazzal, Tiedemann, Andreas von, Laatsch, Hartmut

“…The motility of zoospores is critical in the disease cycles of Peronosporomycetes that cause devastating diseases in plants, fishes, vertebrates, and microbes…”
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Sorbicillin Analogues and Related Dimeric Compounds from Penicillium notatum by MASKEY, Rajendra P., GRüN-WOLLNY, Iris, LAATSCH, Hartmut

“…In our screening of microorganisms for new natural products, the fungus Penicillium notatum delivered further members of the sorbicillin family, namely, the…”
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