Literature DB >> 2719648

Reaction of 3-dehydroecdysone with certain n.m.r. solvents.

O W Howarth1, M J Thompson, H H Rees.   

Abstract

Synthetically prepared 3-dehydroecdysone shows by n.m.r. spectroscopy a mixture of two and three components in 2H2O and [2H4]methanol respectively; only 3-dehydroecdysone is indicated in [2H5]pyridine. Although 3-dehydroecdysone is the sole component in [2H5]pyridine, it represents only 62% and 55% in 2H2O and [2H4]methanol respectively. Evidence indicates that the other component in 2H2O is a 3-[2H2]hydrate of 3-dehydroecdysone, and that in [2H4]methanol the other two components are isomeric [2H3]hemiacetals of 3-dehydroecdysone.

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Year:  1989        PMID： 2719648      PMCID： PMC1138505          DOI： 10.1042/bj2590299

Source DB:  PubMed          Journal:  Biochem J        ISSN： 0264-6021            Impact factor:   3.857


  8 in total

1.  Ecdysone Oxidase, an enzyme from the blowfly Calliphora erythrocephala (Meigen).

Authors:  J Koolman; P Karlson
Journal:  Hoppe Seylers Z Physiol Chem       Date:  1975-07

2.  Catalytical oxidation of ecdysteroids to 3-dehydro products and their biological activities.

Authors:  K D Spindler; J Koolman; F Mosora; H Emmerich
Journal:  J Insect Physiol       Date:  1977       Impact factor: 2.354

3.  3-Epi-20-hydroxyecdysone from meconium of the tobacco hornworm.

Authors:  M J Thompson; J N Kaplanis; W E Robbins; S R Dutky; H N Nigg
Journal:  Steroids       Date:  1974-09       Impact factor: 2.668

4.  Ecdysone metabolism: ecdysone dehydrogenase-isomerase.

Authors:  H N Nigg; J A Svoboda; M J Thompson; J N Kaplanis; S R Dutky
Journal:  Lipids       Date:  1974-12       Impact factor: 1.880

5.  Preparation of 3-epi-ecdysone and 3-epi-20-hydroxyecdysone.

Authors:  L Dinan; H H Rees
Journal:  Steroids       Date:  1978-12       Impact factor: 2.668

6.  Involvement of 3-dehydroecdysone in the 3-epimerization of ecdysone.

Authors:  N P Milner; H H Rees
Journal:  Biochem J       Date:  1985-10-15       Impact factor: 3.857

7.  Regulation of the ecdysteroid titer of Manduca sexta: reappraisal of the role of the prothoracic glands.

Authors:  J T Warren; S Sakurai; D B Rountree; L I Gilbert; S S Lee; K Nakanishi
Journal:  Proc Natl Acad Sci U S A       Date:  1988-02       Impact factor: 11.205

8.  Ecdysteroid metabolism by soluble enzymes from an insect. Metabolic relationships between 3 beta-hydroxy-, 3 alpha-hydroxy- and 3-oxoecdysteroids.

Authors:  C Blais; R Lafont
Journal:  Hoppe Seylers Z Physiol Chem       Date:  1984-07
  8 in total

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