6-Deoxotyphasterol and 3-Dehydro-6-deoxoteasterone, Possible Precursors to Brassi-nosteroids in the Pollen of Cupressus arizonica

スポンサーリンク

概要

• 論文の詳細を見る

• Two new congeners (22R, 23R, 24S)-22, 23-dihydroxy-24-methyl-5α-cholestan-3α-ol 2 and (22R, 23R, 24S)-22, 23-dihydroxy-24-methyl-5α-cholestan-3-one 4 that are termed 6-deoxotyphasterol and 3-dehydro-6-deoxoteasterone, respectively, occur in relatively large amounts in the mature pollen of Cupressus arizonica. GC-MS, NMR spectroscopy, the reduction of 4 to 2, and the independent formation of 2 by the reduction of typhasterol were used to identify the new compounds. In the rice lamina bioassay, 2 showed weak activity. 6-Deoxocastasterone, castasterone, typhasterol, an epicastasterone-like compound, teasterone, 28-homocastasterone, 3-dehydroteasterone, brassinolide, and dolichosterone (or 24-epibrassinolide) were also present. These brassinosteroids were identified by co-chromatography with standards after being converted for an HPLC analysis of bioactive fractions. Six other peaks have not yet been assigned. 6-Deoxotyphasterol and 3-dehydro-6-deoxoteasterone should prove useful for exploring the early stages of the biosynthetic pathway(s) to brassinosteroids.

• 社団法人日本農芸化学会の論文
• 1995-05-23

著者

• Yokota Takao

  Department Of Agricultural Chemistry The University Of Takyo

• Yokota Takao

  Department Of Biosciences Teikyo University

• Cameron W.

  Schools Of Chemistry University Of Melbourne

• Sasse M.

  Forestry University Of Melbourne

• Griffiths G.

  Schools of Chemistry, University of Melbourne

• Griffiths G.

  Schools Of Chemistry University Of Melbourne

関連論文

• PHARMACOKINETICS AND CLINICAL EFFECTS OF CEFOZOPRAN IN PEDIATRIC PATIENTS
• Brassinolide and [26, 28-^2H_6] Brassinolide Are Differently Demethylated by Loss of C-26 and C-28, Respectively, in Marchantia polymorpha
• In Vivo and in Vitro Conversion of Teasterone to Typhasterol in Cultured Cells of Marchantia Polymorpha
• PC92 DIVERSE STRUCTURAL VARIATIONS OF NATURALLY-OCCURRING BRASSINOSTEROIDS
• Brassinolide-related New Bioactive Steroids from Dolichos lablab Seed
• Transfer RNA, a Possible Supplier of Free Cytokinins, Ribosyl-cis-zeatin and Ribosyl-2-methylthiozeatin : Quantitative Comparison between Free and Transfer Cytokinins in Various Tissues of the Hop Plant
• Variations in the Levels of cis- and trans-Ribosylzeatins and Other Minor Cytokinins during Development and Growth of Cones of the Hop Plant
• Identification of N^6-(3-methyl-but-2-enyl)adenosine, zeatin, zeatin riboside, gibberellin A_ and abscisic acid in shoots of the hop plant
• Identification of zeatin and zeatin riboside in cones of the hop plant and their possible role in cone growth
• Biological Activities of Biosynthetically-related Congeners of Brassinolide
• Identification of a New Brassinosteroid, Cathasterone, in Cultured Cells of Catharanthus roseus as a Biosynthetic Precursor of Teasterone
• Possible Involvement of 3-Dehydroteasterone in the Conversion of Teasterone to Typhasterol in Cultured Cells of Catharanthus roseus
• Endogenous Gibberellins in Mature Seed of Raphanus sativus L. cv. Taibyo-sobutori(Organic Chemistry)
• A study on elderly sexuality : knowledge, attitudes, and image of care staff in nursing homes
• Analysis of Type A Behavior Pattern associated with Longevity
• Occurrence of Brassinolide and Castasterone in Crown Gall Cells of Catharanthus roseus(Biological Chemistry)
• Occurrence of Castasterone, Brassinolide and Methyl 4-Chloroindole-3-acetate in Immature Vicia faba Seeds(Organic Chemistry)
• Plants Steroid Hormones, Brassinosteroids : Current Highlights of Molecular Aspects on their Synthesis/Metabolism, Transport, Perception and Response
• Identification of a Triterpenoid Saponin in Etiolated Pea Shoots as Phytochrome Killer
• Brassinosteroids and Monoglycerides with Brassinosteroid-like Activity in Immature Seeds of Oryza sativa and Perilla frutescens and in Cultured Cells of Nicotiana tabacum
• Brassinosteroids and Monoglycerides in Immature Seeds of Cassia tora as the Active Principles in the Rice Lamina Inclination Bioassay
• ヒエ種子中に含まれるステロールおよびステロイド系3-オンの同定
• アワ種子中に含まれる新規ステロイド、24-Ethyl-5α-cholest-24(28)Z-en-3-oneの合成と同定
• Occurrence of Potential Brassinosteroid Precursor Steroids in Seeds of Wheat and Foxtail Millet
• Identification of Brassinosteroids with Epimerized Substituents and/or the 23-Oxo Group in Pollen and Anthers of Japanese Cedar
• Brassinolide Is Biosynthesized from Castasterone in Catharanthus roseus Crown Gall Cells(Organic Chemistry)
• Identification of Brassinolide, Castasterone, Typhasterol, and Teasterone from the Pollen of Lilium elegans
• A Root Growth-promoting Factor, Capillarol, from Artemisia capillaris Thunb(Biological Chemistry)
• Identification of Teasterone and 4-Desmethylsterols in the Seeds of Ginkgo biloba L.
• Free and Conjugated Brassinosteroids in the Pollen and Anthers of Erythronium japonicum Decne.
• Qualitative and Quantitative Analysis of Endogenous Gibberellins in Raphanus sativus L. during Cold Treatment and the Subsequent Growth
• 28-Homotyphasterol, a New Natural Brassinosteroid from Rice (Oryza sativa L.) Bran
• Structure of Neovasinone, a New α-Pyrone Plant Growth Regulator Produced by the Fungus, Neocosmospora vasinfecta E. F. Smith(Organic Chemistry)
• Metabolism and Biosynthesis of Cytokinins in Tobacco Crown Gall Cells
• Changes in Endogenous Ribosyl-trans-zeatin and IAA Levels in Relation to the Proliferation of Tobacco Crown Gall Cells
• Relationship between hormone content and autonomy in various autonomous tobacco cells cultured m suspension
• Biosynthesis of Brassinosteroids in Seedlings of Catharanthus roseus, Nicotiana tabacum, and Oryza sativa
• Identification of Hinesol as a Chlorophyll-Preserving Substance
• Identification of Castasterone, 6-Deoxocastasterone, Typhasterol and 6-Deoxotyphasterol from the Shoots of Arabidopsis thaliana
• Identification of Castasterone, 6-Deoxocastasterone, and Typhasterol in the Pollen of Robinia pseudo-acacia L.
• 3-Dehydroteasterone, a 3,6-Diketobrassinosteroid as a Possible Biosynthetic Intermediate of Brassinolide from Wheat Grain
• Endogenous Gibberellins in the Immature Seed and Pericarp of Loquat (Eriobotrya japonica)
• Identification of Castasterone, Typhasterol and Teasterone from the Pollen of Zea mays(Organic Chemistry)
• Synthesis and Root Growth-promoting Activity of Capillarol and Its Derivatives
• Identification of Castasterone and Teasterone in Seeds of Cannabis sativa L.
• Related Factors Inducing ICU-syndrome and Personality Traits from the Psychosomatic Viewpoint
• Psychosomatic Treatments for Male Sexual Dysfunctions of Middle and Old Age : Psychosomatics concerning Male Gender Role among Middle and Old Age
• Comparative Study between the Effects of Biofeedback Training and Autogenic Biofeedback Training on Heart Rate Recovery after Disturbing Noise Stress in University Students
• Identification of Jasmonic Acid in Three Species of Higher Plants and Its Biological Activities
• Identification of Brassinolide, Castasterone and Norcastasterone(Brassinone) in Sunflower(Helianthus annum L.) Pollen(Organic Chemistry)
• Identification of Brassinosteroids That Appear to Be Derived from Campesterol and Cholesterol in Tomato Shoots
• Zinc Deficiency Affects the Levels of Endogenous Gibberellins in Zea mays L.
• Preparation and validation of an antibody against gibberellin glucosides
• Identification of Endogenous Gibberellins and Abscisic Acid from Dormant Bulbils of Dioscorea japonica (Japanese Yam)
• 6-Deoxotyphasterol and 3-Dehydro-6-deoxoteasterone, Possible Precursors to Brassi-nosteroids in the Pollen of Cupressus arizonica
• Isolation and 13C NMR Study of Cyclopyazonic Acid, a Toxic Alkaloid Produced by Muscardine Fungi Aspergillus flavus and A. oryzae
• A New Metabolite, 3-Carboxy-2, 4-diphenyl-but-2-enoic Anhydride, Produced by Aspergillus nidulans
• Diverse Structural Variations of The Brassinosteroids in Phaseolus vulgaris Seed
• Fluctuation of Endogenous Cytokinin Contents in Rice during Its Life Cycle-Quantification of Cytokinins by Selected Ion Monitoring Using Deuterium-labelled Internal Standards
• 2-Deoxycastasterone, a New Brassinolide-related Bioactive Steroid from Pinus Pollen
• Purification and Separation of Eight Steroidal Plant-growth Regulators from Dolichos lablab Seed
• 25-Methyldolichosterone, a New Brassinosteroid with a Tertiary Butyl Group from Immature Seed of Phaseolus vulgaris
• 6-Deoxocastasterone and 6-Deoxodolichosterone : Putative Precursors for Brassinoliderelated Steroids from Phaseolus vulgaris
• Brassinolide-related Bioactive Sterols in Dolichos lablab: Brassinolide, Castasterone and a NewAnalog, Homodolicholide

もっと見る 閉じる

スポンサーリンク