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  • Organic Chemistry  (3)
  • Papilionidae  (3)
  • Bjerkandera adusta  (2)
  • Danaidae  (2)
  • 1995-1999  (7)
  • 1980-1984  (3)
  • 1930-1934
  • 1920-1924
  • 1
    Electronic Resource
    Electronic Resource
    Alkaloidal oviposition stimulants for a danaid butterfly,Ideopsis similis L., from a host plant,Tylophora tanakae (Asclepiadaceae) (1995)
    Springer
    Cellular and molecular life sciences 51 (1995), S. 753-756 
    Details
    ISSN: 1420-9071
    Keywords: Oviposition stimulants ; Ideopsis similis ; Danaidae ; Tylophora tanakae ; Asclepiadaceae ; (+)-isotylocrebrine ; (−)-7-demethyltylophorine ; alkaloids
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Chemicals releasing oviposition by an Asclepiadaceae feeder,Ideopsis similis, were identified from a host plant,Tylophora tanakae. A strong positive response was evoked by a methanolic extract of the plant, which proved to contain multiple stimulants. A mixture of two phenanthroindolizidine alkaloids, (+)-isotylocrebrine and (−)-7-demethyltylophorine, isolated from organic fractions, elicited significant ovipositional responses from females.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01941275
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  • 2
    Electronic Resource
    Electronic Resource
    A neolignoid feeding deterrent againstLuehdorfia puziloi larvae (lepidoptera: Papilionidae) fromHeterotropa aspera, a host plant of sibling species,L. japonica (1995)
    Springer
    Journal of chemical ecology 21 (1995), S. 1541-1548 
    Details
    ISSN: 1573-1561
    Keywords: Feeding deterrent ; Luehdorfia puziloi ; L. japonica ; Papilionidae ; Parnassiinae ; Zerynthiini ; neolignoid ; asatone ; Heterotropa aspera ; Asiasarum sieboldii ; Aristolochiaceae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract A feeding deterrent against larvae of a papilionid butterfly,Luehdorfia puziloi (Parnassiinae), a specialist onAsiasarum plants (Aristolochiaceae), was isolated from another aristolochiaceous plant,Heterotropa aspera. Antifeedant activity was exhibited by then-hexane-soluble fraction that proved to contain at least two active components. One of the deterrents was identified as a neolignan compound, asatone. The concentration of asatone inH. aspera was estimated at approximately 225 ppm, and larval feeding ofL. puziloi was significantly deterred at concentrations over 90 ppm. By contrast, asatone was not detectable (〈 1 ppm, if any) in its host plant,Asiasarum sieboldii.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02035151
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  • 3
    Electronic Resource
    Electronic Resource
    Pyrrolizidine Alkaloids Mediate Host-Plant Recognition by Ovipositing Females of an Old World Danaid Butterfly, Idea leuconoe (1997)
    Springer
    Journal of chemical ecology 23 (1997), S. 1703-1713 
    Details
    ISSN: 1573-1561
    Keywords: Oviposition stimulants ; Idea leuconoe ; Lepidoptera ; Danaidae ; Parsonsia laevigata ; Apocynaceae ; pyrrolizidine alkaloids ; parsonsianine ; parsonsianidine ; 17-methylparsonsianidine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract A giant danaid butterfly, Idea leuconoe, specializes on apocynaceous plants such as Parsonsia laevigata, which has been reported to contain pyrrolizidine alkaloids. Females of I. leuconoe deposited eggs in response to methanolic extract of P. laevigata, and subsequent bioassay-guided fractionation of the extract revealed that phytochemicals crucial for host recognition by ovipositing females are Parsonsia-specific macrocyclic pyrrolizidine alkaloids including parsonsianine, parsonsianidine, and 17-methylparsonsianidine. Parsonine, another P. laevigata pyrrolizidine component with a keto-dihydropyrrolizine moiety that is closely related in structure to male pheromones of the butterfly, and several nonhost pyrrolizidine alkaloids were entirely inactive. We interpret these data as strong evidence for an ancestral association through herbivory between danaid butterflies and pyrrolizidine alkaloids.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/B:JOEC.0000006445.61545.82
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  • 4
    Electronic Resource
    Electronic Resource
    Reaction of manganese peroxidase ofBjerkandera adusta with synthetic lignin in acetone solution (1998)
    Springer
    Journal of wood science 44 (1998), S. 486-490 
    Details
    ISSN: 1611-4663
    Keywords: Lignin biodegradation ; Manganese peroxidase ; Bjerkandera adusta ; Acetone
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The reaction of manganese peroxidase (MnP) of the white-rot fungusBjerkandera adusta with synthetic lignin dehydrogenation polymer, DHP) in acetone medium was investigated. Gel-permeation chromatography of the DHP treated by MnP demonstrated depolymerization of syringyl DHP in the reaction mixture containing 70% acetone; moreover, concomitant repolymerization occurred to give highly polymerized products. Guaiacyl DHP was only repolymerized by MnP in the same acetone solution without giving degradation products. Addition of ascorbic acid to reaction mixtures containing acetone resulted in preferential depolymerization of syringyl DHP.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00833415
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  • 5
    Electronic Resource
    Electronic Resource
    Production and characterization of ligninolytic enzymes ofBjerkandera adusta grown on wood meal/wheat bran culture and production of these enzymes using a rotary-solid fermenter (1996)
    Springer
    Mycoscience 37 (1996), S. 417-425 
    Details
    ISSN: 1618-2545
    Keywords: Bjerkandera adusta ; lignin peroxidase ; manganese peroxidase ; rotary-solid type fermenter ; solid culture
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Manganese peroxidase (MnP) and lignin peroxidase (LiP) were produced by growing a white-rot fungusBjerkandera adusta statically, on a wood meal/wheat bran culture in flasks. MnP and LiP reached their maximum activity after 6 and 19 days of inoculation, respectively. Both MnP and LiP are thought to be important enzymes in lignin biodegradation byB. adusta. Ion exchange chromatography showed thatB. adusta produced a single LiP and a single MnP enzyme in wood meal/wheat bran culture. These enzymes were separated and characterized. The molecular weight of MnP was 46,500 with a pl of 3.9. The molecular weight of LiP was estimated to be 47,000 with a pl of 3.5. Spectral analysis demonstrated that both enzymes are heme proteins. Production of these enzymes was also achieved using a rotarysolid culture fermenter. MnP, LiP and veratryl alcohol oxidase were produced byB. adusta in the fermenter.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02460998
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  • 6
    Electronic Resource
    Electronic Resource
    Chemical nature of larval osmeterial secretions of papilionid butterflies in the generaParnassius, Sericinus andPachliopta (1995)
    Springer
    Journal of chemical ecology 21 (1995), S. 859-867 
    Details
    ISSN: 1573-1561
    Keywords: Osmeterial secretion ; Lepidoptera ; Papilionidae ; Parnassiinae ; Papilioninae ; Parnassius glacialis ; Sericinus montela ; Pachliopta aristolochiae ; aliphatic acid and ester ; monoterpene ; sesquiterpene
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Volatile components of the larval osmeterial secretion ofParnassius glacialis (Parnassiinae, Parnassiini) consisted of isobutyric acid, 2-methylbutyric acid, and their methyl esters. In contrast, the osmeterial exudate ofSericinus montela (Parnassiinae, Zerynthiini) was characterized as monoterpene hydrocarbons comprisingβ-myrcene (Major),α-pinene, sabinene, limonene, andβ-phellandrene, whereas that ofPachliopta aristolochiae (Papilioninae, Troidini) was composed of numerous sesquiterpene hydrocarbons, includingα-himachalene,α-amorphene, and germacrene-A, and a few oxygenated sesquiterpenoids. In these three species, the chemical nature of the secretions of the last and the penultimate instars was essentially of similar quality, suggesting that the three genera,Parnassius, Sericinus, andPachliopta, are assigned to homogeneous types.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02033466
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  • 7
    Electronic Resource
    Electronic Resource
    Odor of a papilionid butterfly (1980)
    Springer
    Journal of chemical ecology 6 (1980), S. 867-873 
    Details
    ISSN: 1573-1561
    Keywords: Male scent ; Atrophaneura alcinous ; Lepidoptera ; Papilionidae ; benzaldehyde ; phenylacetaldehyde ; 2-phenylpropenal ; n-heptanal ; 6-methylhept-5-en-2-one ; linalool
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Benzaldehyde, phenylacetaldehyde (major component), 2-phenylpropenal,n-heptanal, 6-methylhept-5-en-2-one, and linalool were identified as compounds responsible for the male scent ofAtrophaneura alcinous alcinous. These substances were present predominantly in the wings, and the quantity of them was largest at the inner margin of the hind wing. Female wings also contained some of them in much smaller (except a few components) amounts. The relative proportion of each component exhibited manifests sexual differences.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00990470
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  • 8
    Electronic Resource
    Electronic Resource
    Biosynthesis of the Indole Alkaloids. Cell-free Systems from Catharanthus roseus PlantsFor preliminary reports of this work, see [1-4]. (1982)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 65 (1982), S. 2088-2101 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Cell-free systems from Catharanthus roseus plants are utilized for various studies relating to the biosynthesis of indole alkaloids. Tryptamine (5) and secologanin (6), two fundamental building units, are shown to be incorporated into the alkaloid vindoline (7). In another study, catharanthine (18) and vindoline (7) are utilized by this enzyme system and coupled to the important bisindole biointermediate 3′,4′-anhydrovinblastineThe previously [20] used name for 17, 3′, 4′-dehydrovinblastine, is incorrect. (17). The latter substance is, in turn, incorporated and converted to the natural alkaloids leurosine (8), Catharine (9) and vinblastine (10), thereby providing information about the biosynthesis of these complex molecules. High pressure liquid chromatography assay of the enzymic mixture sheds light on the enzymes involved in the coupling of 18 and 7.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19820650716
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  • 9
    Electronic Resource
    Electronic Resource
    Total Synthesis of Indole and Dihydroindole Alkaloids. XVIIIPart XVII: [1].. Isomers and analogues of vinblastine (1980)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 63 (1980), S. 366-374 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The synthesis and conformational analysis of (3′R)-3-hydroxyleurosidine (5), (3′S)-3-hydroxyleurosidine (10), (3′S)-3-acetoxy-4′-deoxyleurosidine (15), (3′R)-3-acetoxy-4′-deoxyleurosidine (23), (3′R)-3-acetoxy-4′-deoxyvinblastine (16), (3′S)-3-acetoxy-4′-deoxyleurosidine (28) is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19800630206
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  • 10
    Electronic Resource
    Electronic Resource
    Lanthanum isopropoxide catalyzed addition of activated nucleophiles to imines (1995)
    New York, NY [u.a.] : Wiley-Blackwell
    Applied Organometallic Chemistry 9 (1995), S. 467-471 
    Details
    ISSN: 0268-2605
    Keywords: lanthanum isopropoxide ; imines ; methylmalonitrile ; methyl 2-cyanopropanoate ; α-imino ester ; N-toluenesulfonylimine ; N-(4-methoxycarbonylphenyl)imine ; addition to imines ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The addition of certain activated nucleophiles to activated imines is catalyzed by lanthanum isopropoxide. As activated nucleophiles, methylmalononitrile and methyl 2-cyanopropanoate can be utilized. Imines having an electronwithdrawing group either at the carbon or at the nitrogen atom of the C=N double bond can be used; for example N-toluenesulfonylimines, N-(4-methoxycarbonylphenyl)imines and α-imino esters.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aoc.590090515
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