Limonoid extractives from Turraea floribunda and T. obtusifolia

Akinniyi, John A.; Connolly, Joseph D.; Mulholland, Dulcie A.; Rycroft, David S.; Taylor, Davida A.H.

doi:10.1016/0031-9422(86)80088-7

Cited by 27 publications

(24 citation statements)

References 3 publications

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“…The methanolic extract of T. abyssinica leaves showed the highest larvicidal activity on T. absoluta (Table ). Bioassay‐guided fractionation of the crude extract and the active fraction led to the isolation of a new limonoid derivative 11β,12α‐diacetoxywalsuranolide ( 1 ) and three known other, including 1α,7α,12α‐triacetoxy‐4α‐carbomethoxy‐11β‐hydroxy‐14β,15β‐epoxyhavanensin ( 2 ) (Akinniyi, Connolly, Mulholland, Rycroft, & Taylor, ), 11‐epi‐21‐hydroxytoonacilide ( 3 ) (Cheplogoi & Mulholland, ) and 11β, 12α‐diacetoxycedrelone ( 4 ) (Mulholland, Monkhe, Coombes, & Rajab, ).…”

Section: Resultsmentioning

confidence: 99%

“…The known compounds 1α, 7α, 12α‐triacetoxy‐4α‐carbomethoxy‐11β‐hydroxy‐14β, 15β‐epoxyhavanensin ( 2 ) (Akinniyi et al., ), 11‐epi‐21‐hydroxytoonacilide ( 3 ) (Cheplogoi & Mulholland, ) and 11β, 12α‐diacetoxycedrelone ( 4 ) (Mulholland et al., ) were identified by comparison of the spectral data with those reported in the literature.…”

Section: Resultsmentioning

confidence: 99%

“…The methanolic extract of T. abyssinica leaves showed the highest larvicidal activity on T. absoluta (Table 1) Mulholland, Rycroft, & Taylor, 1986), 11-epi-21-hydroxytoonacilide…”

Section: Isolation and Structures Elucidation Of Compounds From Meomentioning

confidence: 99%

“…The known compounds 1α, 7α, 12α-triacetoxy-4α-carbomethoxy-11β-hydroxy-14β, 15β-epoxyhavanensin (2) (Akinniyi et al, 1986), 11-epi-21-hydroxytoonacilide (3) (Cheplogoi & Mulholland, 2003) and…”

Section: Isolation and Structures Elucidation Of Compounds From Meomentioning

confidence: 99%

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Larvicidal activities of limonoids from Turraea abyssinica (Meliaceae) on Tuta absoluta (Meyrick)

Essoung

Chhabra

Mba’ning

et al. 2018

J Applied Entomology

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Preliminary screening of extracts of the leaves and stems of four Turraea plant species (Meliaceae) on second instar larvae of Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) showed that the methanolic extract of Turraea abyssinica leaves possess good toxic potential with LD50 of 270.7 ppm. Fractionation of this extract led to isolation of a new limonoid derivative, 12α‐diacetoxywalsuranolide (1) and three other known limonoids [1α,7α,12α‐triacetoxy‐4α‐carbomethoxy‐11β‐hydroxy‐14β,15β‐epoxyhavanensin (2), 11‐epi‐21‐hydroxytoonacilide (3), 11β,12α‐diacetoxycedrelone (4)]. The structures of the compounds were established by IR, UV, mass spectrometry and 1D/2D NMR analyses, and in the case of the known compounds, also by comparison with reported data. All the isolates were tested for their larvicidal activities at different dose range against second instar larvae of T. absoluta. They were found to be more active (with LD50 < 7.0 ppm) compared to the reference compound azadirachtin (LD50 value of 7.8 ppm).

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

“…The methanolic extract of T. abyssinica leaves showed the highest larvicidal activity on T. absoluta (Table 1) Mulholland, Rycroft, & Taylor, 1986), 11-epi-21-hydroxytoonacilide…”

Section: Isolation and Structures Elucidation Of Compounds From Meomentioning

confidence: 99%

Section: Isolation and Structures Elucidation Of Compounds From Meomentioning

confidence: 99%

See 2 more Smart Citations

Larvicidal activities of limonoids from Turraea abyssinica (Meliaceae) on Tuta absoluta (Meyrick)

Essoung

Chhabra

Mba’ning

et al. 2018

J Applied Entomology

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show abstract

“…Previous analysis of the bark and rootbark has led to the isolation of havanensin-class limonoids (Akinniyi et al, 1986;Torto et al, 1995;Torto et al, 1996) and the seeds have previously yielded turraflorins A-C which are ring B opened limonoids of the turraflorin class (Mulholland et al, 1998;Fraser et al, 1994). The current reinvestigation of the seeds was undertaken to re-isolate turraflorin A which was required as a starting material for a synthetic project.…”

Section: Introductionmentioning

confidence: 96%