Neochilenin, a new glycoside of 3-O-methylquercetin, and other flavonols in the tepals ofNeochilenia, Neoporteria andParodia species (Cactaceae)

  • Tsukasa Iwashina
  • Shunji Ootani
  • Kôzô Hayashi
Article

Abstract

3-O-Methylated flavonols were isolated as crystals for the first time from the flowers ofNeochilenia, Neoporteria andParodia species belonging to the sub-family Cereoideae (Cactaceae), which are native to South America. The structures of three compounds were confirmed by chemical and spectral means. In the tepals of 7 species ofNeoporteria, 3-methyl ether of quercetin was found in the form of aglycone, whereas it was present as the 7-O-glucoside in the tepals ofParodia sanguiniflora and as the 4′-O-glucoside in the tepals of three species ofNeochilenia. Among those two glucosides of quercetin 3-methyl ether, the former has been found in a whole plant ofArtemisia transiliensis (Compositae), while the latter is new to the literature. Therefore, the term “neochilenin” may be assigned to this new pigment.

Key words

Cactaceae Flavonols Neochilenia spp. Neochilenin Quercetin 3-methyl ether derivatives 

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Copyright information

© The Botanical Society of Japan 1984

Authors and Affiliations

  • Tsukasa Iwashina
    • 1
  • Shunji Ootani
    • 1
  • Kôzô Hayashi
    • 1
  1. 1.The Research Institute of Evolutionary BiologyTokyo

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