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1Author    H.E JRequires cookie*
 Title    Synthetic Studies towards anti-Leukaemic Alkaloids, VIII The Roads to Vinblastine ATTA-UR-RAHMAN, ANWER BASHA, MARYAM GHAZALA, and NIGHAT WAHEED  
 Abstract    Various synthetic approaches to the anti-cancer alkaloids vinblastine and vincristine are described. Methods for the generation of nine-membered nitrogen containing rings present in the indole moiety of vinblastine are discussed. Modes of joining the two moieties present in VLB in a natural configuration are presented. 
  Reference    (Z. Naturforsch. 31b, 1416—1420 [1976]; received April 28 1976) 
  Published    1976 
  Keywords    anti-Cancer, Alkaloids, Vinblastine, Vincristine 
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 TEI-XML for    default:Reihe_B/31/ZNB-1976-31b-1416.pdf 
 Identifier    ZNB-1976-31b-1416 
 Volume    31 
2Author    Atta-Ur-Rahman, Mumtaz Sultana, H.E JRequires cookie*
 Title    A Total Synthesis of (=j=)-Yincamine and ( i ) -Eburnamonine  
 Abstract    A synthesis of vincamine (1) and eburnamo-nine (2) is reported which involves a new route to the key intermediate (8). 
  Reference    Z. Naturforsch. 37b, 793—794 (1982); received December 8 1981 
  Published    1982 
  Keywords    Hunteria, Alkaloids, Vincamine, Eburnamonine 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0793_n.pdf 
 Identifier    ZNB-1982-37b-0793_n 
 Volume    37 
3Author    Hans Achenbach, Bernd RaffelsbergerRequires cookie*
 Title    Alkaloide in Tabernaemontana-Arten, XII [1]  
 Abstract    From the methanolic extract of the stems of T. olivacea we isolated 12 alkaloids and deduced their structures. The main alkaloidal constituent is the new compound condylo- carpine-Nt,-oxide (1). Besides this, we found akuammidine (16) and 10 further known alkaloids, which belong to the ibogamine-type. 
  Reference    Z. Naturforsch. 35b, 885—891 (1980); eingegangen am 4. Februar 1980 
  Published    1980 
  Keywords    Alkaloids, Tabernaemontana olivacea, Condylocarpine-N-oxide 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-0885.pdf 
 Identifier    ZNB-1980-35b-0885 
 Volume    35 
4Author    Von Khaplofolin, Dihydroflindersin Und, Verwandten Alkaloiden, J. Reisch, M. Müller+, I. MesterRequires cookie*
 Title    Eine einfache Darstellung and Related Alkaloids [1]  
 Abstract    A simple synthesis of khaplofoline (lb) and dihydroflindersine (4) has been reported. PTC-prenylation of 4-hydroxy-2-quinolone (8 a) gave a mixture of C-, O-and C/O-prenylated compounds (2a, 8b, 8c, 3d, 3e and 8f), 2a being the major product. N-prenyla-tion of 8h gave 3i which yielded 8k after following treatment with aqueous HCl. Acid catalysed cyclisation of 2 a gave a mixture of 4 and 1 b in a ratio of 3:1. 
  Reference    Z. Naturforsch. 36b, 1176—1179 (1981); eingegangen am 30. April 1981 
  Published    1981 
  Keywords    Alkaloids, Quinolone Derivatives, Phase Transfer Catalysis 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-1176.pdf 
 Identifier    ZNB-1981-36b-1176 
 Volume    36 
5Author    Robert Verpoorte, M. Thea, Rommert Ulder-Krieger, JacquesM. Wijnsma, AndersBaerheim Verzijl, SvendsenRequires cookie*
 Title      
 Abstract    The quantitative analysis o f the alkaloids in Cinchona tissue cultures by means o f a reversed-phase ion pair HPLC method is reported. 
  Reference    Z. Naturforsch. 39c, 680—6 (1984); received November 29 1983 
  Published    1984 
  Keywords    Cinchona, Tissue Culture, Alkaloids, Quantitative Analysis, HPLC 
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 TEI-XML for    default:Reihe_C/39/ZNC-1984-39c-0680_n.pdf 
 Identifier    ZNC-1984-39c-0680_n 
 Volume    39 
6Author    H.E JRequires cookie*
 Title    A tta-ur-Rahm an*, M ehrun Nisa, and Talat Zamir  
 Abstract    A new alkaloid, "papilicine", has been isolated from the leaves of Buxus papilosa to which structure (1) has been assigned on the basis of spectroscopic studies. Buxus species have been used in the indigenous system of medicine as febrifuge, for relief of rheumatism and for the treatm ent of a num ber of other ailments. Buxus papilosa C. K. Schn., Linn. 
  Reference    (Z. Naturforsch. 39b, 127—128 [1984]; received March 23 1983) 
  Published    1984 
  Keywords    Buxus papilosa, Alkaloids, Structure Elucidation, NMR Spectra, Mass Spectra 
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 TEI-XML for    default:Reihe_B/39/ZNB-1984-39b-0127_n.pdf 
 Identifier    ZNB-1984-39b-0127_n 
 Volume    39 
7Author    Rahman, Sajida Khanum, Yasmin Badar, Kaneez Fatima, Yusuf Ahmad, H.E JRequires cookie*
 Title    Atta-ur  
 Abstract    Continuing studies on the leaves of Rhazya stricta have resulted in the isolation of a new Picralima alkaloid, N h -methyl strictamine 2. 
  Reference    (Z. Naturforsch. 42b, 91—93 [1987]; received June 10 1986) 
  Published    1987 
  Keywords    Rhazya stricta, Alkaloids, Indolenine, 13 C NMR Spectra, Mass Spectra 
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 TEI-XML for    default:Reihe_B/42/ZNB-1987-42b-0091.pdf 
 Identifier    ZNB-1987-42b-0091 
 Volume    42 
8Author    B. C. Homeyer, MargaretF. RobertsRequires cookie*
 Title    Alkaloid Sequestration by Papaver somniferum Latex  
 Abstract    The 1000 x g organelles o f Papaver somniferum latex have been shown to accum ulate rapidly, large quantities o f alkaloids (0 .0 5 -1 m g/m g organelle protein), particularly m orphine, thebaine, codeine and papaverine and have been found to exhibit a surprising degree o f specificity for the accumulation o f these alkaloids. The uptake o f alkaloid is independent o f temperature and does not show a requirement for ATP 10_ 3 m, M g2+ 10" 3 M , or KC1 10_ 3 m. It is unaffected by known ATPase inhibitors (chlorm adinone acetate 2 .5 x 1 0 _ 5 m, N ,N -dicyclohexylcarbo-diim ide 5 x 10-4 M and sodium vanadate 10_ 4 m) but showed considerable increase in m orphine accumulation in the presence o f 4-chlorom ercum benzoate 5 x 10-4 M , w hile N -m ethylm aleim id e 5 x 10_ 4 m had no effect, and carbonylcyanide 4-(trifluorom ethoxy)phenylhydrazone 5 x 10_ 4 m caused a reduction (ca. 30%) o f m orphine uptake. An acid m edium , pH 4 .5 -5 .5 , also results in decreased morphine uptake. 
  Reference    Z. Naturforsch. 39c, 876 (1984); received M ay 21/June 18 1984 
  Published    1984 
  Keywords    Papaver somniferum L, Alkaloid, Sequestration, Alkaloid Uptake, Organelle, Latex 
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 TEI-XML for    default:Reihe_C/39/ZNC-1984-39c-0876.pdf 
 Identifier    ZNC-1984-39c-0876 
 Volume    39 
9Author    Vassya St, NedyalkaV. Bankova3, Dim Handjieva3, L. Itar, ZarkaY. Djilianovb, RositsaI. Vassilevab, AtanasI. Bachvarovab, Atanasov, KamenL. Stefanov3, SimeonS. Popov3Requires cookie*
 Title    Polyphenol and Alkaloid Changes in Glyphosate-Treated Tobacco Regenerants Selected for Herbicide Tolerance  
 Abstract    In vitro a one-step selection for glyphosate tolerance of two Bulgarian tobacco cultivars Zlatna Arda and Nevrokop A 24 was carried out. After treatment with glyphosate of the control plants and their regenerants polyphenol and alkaloid changes were determined. A decrease in the polyphenol concentrations and an in­ crease in the alkaloid concentrations were registered only for Zlatna Arda. 
  Reference    Z. Naturforsch. 50c, 313 (1995); received July 1/Novem ber 29 1994 
  Published    1995 
  Keywords    Glyphosate, Tobacco, in vitro Selection, Chlorogenic Acid, Rutin, Alkaloids 
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 TEI-XML for    default:Reihe_C/50/ZNC-1995-50c-0313_n.pdf 
 Identifier    ZNC-1995-50c-0313_n 
 Volume    50