title: 2-Deoxy-alpha-ecdysone from ovaries and eggs of the silkworm, Bombyx mori.
abstract: From ovaries dissected from developing and emerged adults of the silkworm, Bombyx mori, two substances having high molting hormone activity were isolated. One of these was identified as 2-deoxy-alpha-ecdysone by means of high-pressure liquid chromatography and mass spectrometry. Although this compound had previously been isolated from the fern Blechnum minus and postulated to be the precursor of alpha-ecdysone, it had not been obtained from insect material. The compound is also contained in the form of a conjugate in ovaries as well as in diapausing silkworm embryos.
mesh_terms: D000818:Animals; D012831:Bombyx / Q000032:analysis*; D004440:Ecdysone / Q000031:analogs & derivatives* / Q000302:isolation & purification; D004625:Embryo, Nonmammalian / Q000032:analysis; D005260:Female; D006605:Hibernation; D010053:Ovary / Q000032:analysis; D010063:Ovum / Q000032:analysis
chemical_list: D004440:Ecdysone