Lactones from Glomerella cingulata Cultivated in Rice: Structural Studies and Antimicrobial Evaluation

被引：0

作者：

Gomes, Nayara F. ^{[1
]}

Junior, Manoel Leao L. ^{[2
]}

Filho, Antonio Jose C. ^{[1
]}

Santos, Lourivaldo S. ^{[2
]}

Silva, Luis Claudio N. ^{[3
]}

Rodrigues-Filho, Edson ^{[4
]}

机构：

[1] Fed Inst Educ Sci & Technol Maranhao, Grad Program Chem, BR-65030005 Sao Luis, Maranhao, Brazil

[2] Fed Univ Para, Inst Exact & Nat Sci, BR-65075110 Belem, Para, Brazil

[3] Univ Ceuma, Grad Program, BR-65075120 Sao Luis, Maranhao, Brazil

[4] Univ Fed Sao Carlos, Dept Chem, BR-13565905 Sao Carlos, SP, Brazil

来源：

RECORDS OF NATURAL PRODUCTS | 2023年 / 17卷 / 01期

关键词：

Endophytic fungus; Glomerella cingulata; antimicrobial activity; SECONDARY METABOLITES; COLLETOTRICHUM;

D O I：

10.25135/rnp.340.2202.2352

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Extracts of the endophytic fungus Glomerella cingulata grown in polish rice, were fractionated by chromatographic procedures including preparative scale HPLC. The isolated compounds were structurally elucidated through spectroscopic analysis, mainly H-1 and C-13 NMR and HRMS. These analyzes allowed the identification of pestalotin-1 (1) and the phthalides (3R*,8S*)-5,7-dihydroxy-3-(1-hydroxyethyl)-phthalide (2) and (3R*,8R*)-5,7-dihydroxy-3-(1-hydroxyethyl)-phthalide (3). The extracts, their fractions and isolated substances were tested against several bacteria. The lactone 2 showed some activity against lineages of E. coli and Enterococcus faecalis while its diastereomer 3 and pestalotin-1 were inactive.

引用

页码：195 / 200

页数：6

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