Cyclic Phenylboronates of Ecdysteroids as Products of Regiospecific Reaction with Phenylboronic Acid

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Title:Cyclic Phenylboronates of Ecdysteroids as Products of Regiospecific Reaction with Phenylboronic Acid
Creators:
Píš, Jaroslav
Hykl, Jiří
Buděšínský, Miloš
Harmatha, Juraj
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 58, 3, pp. 612-618

Abstract

The diol system in the side-chain of ecdysteroids reacts with phenylboronic acid under formation of cyclic esters. Phenylboronates of ecdysteroids <i>I - V</i> were prepared. The regiospecific reaction course was confirmed by <sup>1</sup>H NMR spectra of the products. The reaction conditions were studied for 20-hydroxyecdysone (<i>I</i>). The phenylboronate can be prepared in high yields even in aqueous solutions. The liberation of the ecdysteroid <i>I</i> from the corresponding phenylboronate <i>VI</i> was performed using various reagents - diols or carboxylic acids.

Title:Cyclic Phenylboronates of Ecdysteroids as Products of Regiospecific Reaction with Phenylboronic Acid
Creators:
Píš, Jaroslav
Hykl, Jiří
Buděšínský, Miloš
Harmatha, Juraj
Divisions:Life and Chemical Sciences > Institute of Organic Chemistry and Biochemistry > Collection of Czechoslovak Chemical Communications
Journal or Publication Title:Collection of Czechoslovak Chemical Communications
Volume:58
Number:3
Page Range:pp. 612-618
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc19930612UNSPECIFIED
ID Code:185
Item Type:Article
Deposited On:06 Feb 2009 16:58
Last Modified:06 Feb 2009 15:59

Citation

Píš, Jaroslav; Hykl, Jiří; Buděšínský, Miloš; Harmatha, Juraj (1993) Cyclic Phenylboronates of Ecdysteroids as Products of Regiospecific Reaction with Phenylboronic Acid. Collection of Czechoslovak Chemical Communications, 58 (3). pp. 612-618. ISSN 0010-0765

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