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Specioside a new iridoid glycoside from catalpa speciosa


, : Specioside a new iridoid glycoside from catalpa speciosa. Journal of Natural Products (Lloydia) 43(4): 524-526

The ethanolic extract of the leaves of C. speciosa, with feeding deterrent activity against the gypsy moth larvae, [Lymantria dispar] was fractionated by solvent partitioning and column chromatography. Two weakly active compounds were isolated and identified by spectral and chemical methods to be catalposide (1) and a new iridoid, specioside (2).

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Accession: 006459286

DOI: 10.1021/np50010a015

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Related references

Stephenson, AG., 1982: Iridoid glycosides in the nectar of Catalpa speciosa are unpalatable to nectar thieves. A bioassay employing sphingid larvae, Ceratomia catalpae, showed that Catalpa speciosa nectar contains iridoid glycosides. When potential nectar thieves (ants and butterflies) were offered (A) nectar, (B) sucrose solution of identical concentratio...

An, S.J.; Pae, H.O.; Oh, G.S.; Choi, B.M.; Jeong, S.; Jang, S.I.; Oh, H.; Kwon, T.O.; Song, C.E.; Chung, H.T., 2002: Inhibition of TNF-alpha, IL-1beta, and IL-6 productions and NF-kappa B activation in lipopolysaccharide-activated RAW 264.7 macrophages by catalposide, an iridoid glycoside isolated from Catalpa ovata G. Don (Bignoniaceae). Catalposide, the major iridoid glycoside isolated from the stem bark of Catalpa ovata G. Don (Bignoniaceae), was found to inhibit the productions of tumor necrosis factor-alpha (TNF-alpha), interleukin-1beta (IL-1beta), and interleukin-6 (IL-6), a...

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Churcher, C.S., 1992: Western catalpa, Catalpa speciosa, colonizing in Toronto, Ontario. Three young specimens of Catalpa speciosa or Western Catalpa are present in the North Rosedale Ravine and Don Valley Brickyard pit. They are between 6 and 8 years old, presumably result from fertile self-seeding from ornamental plantings in Roseda...

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