Method for producing a heterocyclic compound and an aromatic carboxylic acid having one or more hydroxyl groups, and modified aromatic ring dioxygenase
申请人:——
公开号:US20040086983A1
公开(公告)日:2004-05-06
An objective of the present invention is to provide a method of producing hydroxylated heterocyclic compounds and hydroxylated aromatic carboxylic acids by bioengineering technique, and modified enzymes which can be used for this method. A method of producing hydroxylated heterocyclic compounds or hydroxylated aromatic carboxylic acids comprises reacting an aromatic ring dioxygenase with heterocyclic compounds or aromatic carboxylic acids to hydroxylate these compounds. An enzyme according to the present invention is an aromatic ring dioxygenase comprising an &agr;-subunit consisting of the amino acid sequence of SEQ ID NO: 2, which is modified according to the &agr;-subunit of the biphenyl dioxygenase derived from the strain
Burkholderia cepacia
LB400, a &bgr;-subunit consisting of the amino acid sequence of SEQ ID NO: 4, and a ferredoxin consisting of the amino acid sequence of SEQ ID NO: 6, and a ferredoxin reductase consisting of the amino acid sequence of SEQ ID NO: 8.
本发明的目的是提供一种通过生物工程技术生产羟基化杂环化合物和羟基化芳香族羧酸的方法,以及可用于该方法的改良酶。生产羟基化杂环化合物或羟基化芳香族羧酸的方法包括使芳香环二加氧酶与杂环化合物或芳香族羧酸反应,使这些化合物羟基化。根据本发明的一种酶是一种芳香环二加氧酶,它包括一个由 SEQ ID NO: 2 的氨基酸序列组成的&agr;-亚基,它是根据从菌株中得到的联苯二加氧酶的&agr;-亚基修饰的
伯克霍尔德氏菌
LB400,由 SEQ ID NO: 4 的氨基酸序列组成的&bgr;-亚基,由 SEQ ID NO: 6 的氨基酸序列组成的铁毒素,以及由 SEQ ID NO: 8 的氨基酸序列组成的铁毒素还原酶。
5′-Chloro-2,2′-dihydroxychalcone and related flavanoids as treatments for prostate cancer
Several flavonoids and their biosynthetic precursor chalcones were designed and synthesized to improve the biological effects of the lead compound 2'-hydroxyflavonone against androgen receptor (AR)-dependent transcriptional stimulation. Newly synthesized chalcones 19 and 26 suppressed AR dependent transcription as well as DHT-dependent growth stimulation at a low micromolar level. These compounds were also effective against ligand-independent constitutively active mutant AR derived from castration-resistant PCa (CRPC). Compounds 19 and 26 showed broad spectrum anti-proliferative activity at 5-10 mu M against multiple tumor cell lines including androgen-independent and taxane-resistant prostate cancer as well as a multidrug-resistant subline. Mode of action studies suggested that 19 induced sub-G1 accumulation in PC-3 cells by disrupting the microtubule network without affecting cell cycle progression. Furthermore, the in vivo effectiveness of chalcone 19 was confirmed in a xenograft model antitumor assay. Thus, chalcone 19 has the potential to be a bifunctional lead for treatment of AR-dependent PCa at lower doses as well as AR-independent PCa, including CRPC, at higher doses. (C) 2018 Elsevier Masson SAS. All rights reserved.
Vyas; Shah, Journal of the Indian Chemical Society, 1949, vol. 26, p. 273,274
作者:Vyas、Shah
DOI:——
日期:——
The Constitution of Natural Tannins. VI.<sup>1</sup> Coloring Matters Derived from 2,5-Dihydroxyacetophenone
作者:Alfred. Russell、Samuel Friend. Clark
DOI:10.1021/ja01265a021
日期:1939.10.1
GANDHI P.; TIWARI R. D., J. INDIAN CHEM. SOC. <JICS-AH>, 1977, 54, NO 6, 643