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Short Paper | Regular issue | Vol 83, No. 4, 2011, pp.849-854
Published online, 14th February, 2011
DOI: 10.3987/COM-10-12131
The First Hydroperoxydihydrochalcone in the Etlingera Genus: Etlinglittoralin from the Rhizomes of Etlingera littoralis

Chotika Jeerapong, Sarot Cheenpracha, Wisanu Maneerat, Uma Prawat, Thongchai Kruahong, and Surat Laphookhieo*

*Natural Products Research Laboratory, School of Science, Mae Fah Luang University, Tasud, Muang, Chiang Rai 57100, Thailand

Abstract

Etlinglittarolin (6), a monoterpene-substituted hydroperoxy dihydrochalcone, together with five known dihydrochacones including 2, 6-dihydroxy-4-methoxydihydrochalcone (1), 2,4,6-trihydroxydihydrochalcone (2), 2,6,4-trihydroxy-4-methoxydihydrochalcone (3), methyllinderatin (4), and adunctin E (5), was isolated from the rhizomes of Etlingera littoralis. Their structures were elucidated by spectroscopic analysis.