Chemical investigation of the roots of Cananga latifolia led to the isolation and purification of thirteen juvenile hormone III analogues. Six new analogues, canangalias C-H (1-6) and a new natural product, (2E,6E,10R)-10-acetoxy-11-hydroxy-3,7,11-trimethyldodeca-2,6-dienoic acid methyl ester (7), were isolated. In addition, six known juvenile hormone III analogues were isolated. Their structures were established by spectroscopic methods including 1D and 2D NMR, IR and mass spectrometry.
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http://dx.doi.org/10.1016/j.fitote.2016.08.018 | DOI Listing |
Int J Biol Macromol
January 2025
Beijing Key Laboratory for Forest Pest Control, Beijing Forestry University, Beijing 100083, China. Electronic address:
Monochamus saltuarius is an important vector of pinewood nematode in Eurasia with a high reproductive capacity. Endocrine hormones play a key role in insect reproduction. Understanding the mechanism of internal regulation can provide targets for pest control.
View Article and Find Full Text PDFBull Entomol Res
January 2025
Institute of Plant Protection, Guizhou Provincial Academy of Agricultural Sciences, Guiyang, Guizhou, China.
Juvenile hormone (JH) regulates multiple physiological functions in insects including growth, metamorphosis, and reproduction. Juvenile hormone epoxide hydrolase (JHEH) and juvenile hormone esterase (JHE) are degradative enzymes that metabolise JH, and JH receptor (methoprene-tolerant, ) functions in the regulation of female reproduction and vitellogenesis. In this study, JH titres in adult females were determined using ultra high-performance liquid chromatography and tandem mass spectrometry; the JH titres ranged from 0.
View Article and Find Full Text PDFJ Exp Biol
January 2025
University of Guelph, 50 Stone Rd E, Guelph, N1G 2M7, Canada.
The timing of metamorphosis and settlement is critical for the survival and reproductive success of marine animals with biphasic life cycles. Thyroid hormones (THs) regulate developmental timing in diverse groups of chordates, including the regulation of metamorphosis in amphibians, teleosts, lancelets, tunicates, and lampreys. Recent evidence suggests a role for TH regulation of metamorphosis outside of the chordates, including echinoderms, annelids, and molluscs.
View Article and Find Full Text PDFJ Agric Food Chem
January 2025
College of Plant Protection, Hebei Agricultural University, Baoding, Hebei 071000, P. R. China.
is a major migratory invasive pest and is of global concern. Vitellogenesis, a crucial process for population multiplication in oviparous insects, is regulated by endocrine hormones. In this study, three primary responders to JH signaling, the JH receptor gene , and the downstream transcription factor and , were first cloned and identified.
View Article and Find Full Text PDFInsect Biochem Mol Biol
December 2024
Department of Entomology, College of Agriculture, Food and Environment, University of Kentucky, Lexington, KY, 40546, USA. Electronic address:
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