Annonaceous Acetogenins from the Seeds of Annona squamosa. Adjacent Bis-tetrahydrofuranic Acetogenins.

Acetogenins from Annonaceae

“…IH nmr (CDCI 3 and C 6 D 6 ), (470MHz) (71), (500MHz) (64,70,72), (300 MHz)(37); 13C nmr (50 MHz) (37,71), (125 (64,76); UV (76) 1 H nmr (500 MHz) (64,76), 6 value of terminal methyl allows to fix the position of hydroxyl between C-25 and C-34 (76); 13C nmr (125 MHz) (64,76) Elms (64), Clms (76), HRFABms (64,76) tri-TMSi and tri-TMSi d9 derivatives: Elms (76) triacetate: 1 H nmr (500 MHz) (64,76) tri-(R)-MTPA ester: lH nmr (500 MHz) (64): ----> 15R, 16R (64), ----> 28S (64) absolute…”

Acute Toxicity and Pathological Effect of Annona Squamosa Seed and Leaf Extracts on the Tissues of Cyprinus Carpio.

“…The powdered seed and leaf extracts of this plant species are used to destroy insect, pests, also as repellants and anti-feedants. More than twenty acetogenins from the seeds of Annona squamosal L. are known among which the squamosin-3 and squamostatin-A were two major constituents (Fujimoto et al, 1988;Sahai et al, 1994;Araya et al, 1994a,b). Due to the presence of biologically active compounds acetogenins or squamosin the seeds of A.squamosa are reported to possess insecticidal and abortifacient traits (Chopra et al, 1986).…”

Field Study for the Effectiveness of Some Plants Leaf Extracts against Insect Eutectona Macheralis or Teak Skeletonizer in Forest Nursery of Indore, Madhya Pradesh

“…The present study indicated that the leaves of Annona squamosa L. reported to contain annonins which is toxic or repellent for insect larvae. The insecticidal activity of the seed extracts of A. squamosa is attributable to annonins (i.e., annonin I = squamocin), adjacent bis-tetrahydrofuran (THF) ring acetogenins studied [9]. Table 1 revealed that Methanol extract of Annona squamosa L. leaves found more effective than Ethanol as Methanol has been inhibited by 1.8% infected leaf compare to 1.4% increase by Ethanol extract.…”