261178-55-6Relevant articles and documents
Method for preparing long aliphatic chain diacid derivative and application of long aliphatic chain diacid derivative
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Paragraph 0226; 0228, (2021/07/01)
The invention provides a method for preparing a long aliphatic chain diacid derivative. The method comprises the following steps of: (1) carrying out a cyclization reaction on long aliphatic chain diacid, the long aliphatic chain diacid having a structure as shown in a formula (A); (2) reacting the long aliphatic chain diacid cyclization product with benzyl alcohol to obtain long aliphatic chain diacid monobenzyl ester; (3) carrying out an esterification reaction on the long aliphatic chain diacid monobenzyl ester and N-hydroxysuccinimide so as to obtain long aliphatic chain diacid succinimide benzyl ester; (4) carrying out a nucleophilic addition amidation reaction on the long aliphatic chain diacid succinimide benzyl ester and a compound as shown in a formula (B) to obtain a compound as shown in a formula (C); (5) carrying out an esterification reaction on the compound as shown in the formula (C) and N-hydroxysuccinimide again so as to obtain a compound as shown in a formula (D); and (6) carrying out a debenzylation reaction on the compound shown in the formula (D) so as to obtain a compound shown in a formula (E).
Novel acyl α-pyronoids, dictyopyrone A, B, and C, from Dictyostelium cellular slime molds
Takaya, Yoshiaki,Kikuchi, Haruhisa,Terui, Yuichi,Komiya, Jun,Furukawa, Ken-Ichi,Seya, Kazuhiko,Motomura, Shigeru,Ito, Akira,Oshima, Yoshiteru
, p. 985 - 989 (2007/10/03)
For the elucidation of the diversity of secondary metabolites of Dictyostelium cellular slime molds, we investigate the constituent of three species of slime molds. From the methanol extract of their fruit bodies, we obtained three novel compounds, dictyopyrone A (1) and B (2) from D. discoideum and D. rhizoposium and dictyopyrone C (3) from D. longosporum. They possess a unique α-pyrone moiety with a side chain at the C-3 position. Their relative structures were elucidated by spectral means, and the absolute configuration was confirmed by asymmetric synthesis of 1. Since these compounds were obtained from different species of Dictyostelium slime molds, they may be a type of compound common to this genus.