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Steroids and flavonoids of Porcelia macrocarpa
(2004)
Three mixtures of steroids (1a+1b, 2a+2b and 3a+3b) and two flavonoid glycosides (4 and 5) were isolated from the ethanol extract of branches of Porcelia macrocarpa (Warm.) R. E. Fries (Annonaceae). The steroids ...
GLICOALCALOIDES DOS FRUTOS DO SOLANUM FLACCIDUM VELL
(1995-01-01)
From the fruits of Solanum flaccidum Vell, two glycoalkaloids (solamargine and solasonine) and one aglycone (solasodine) were isolated and identified.
GLICOALCALOIDES DOS FRUTOS DO SOLANUM FLACCIDUM VELL
(1995-01-01)
From the fruits of Solanum flaccidum Vell, two glycoalkaloids (solamargine and solasonine) and one aglycone (solasodine) were isolated and identified.
(25R)-Isonuatigenin, an unusual steroidal sapogenin from Vestia lycioides
(1984)
(25R)-Isonuatigenin, a 5-spirosten-3β,25-diol, was isolated from aerial parts of Vestia lycioides. Its structure was elucidated mainly by 1H NMR and 13C NMR spectroscopy. A mixture of (25R)-nuatigenin and (25S)-isonuatigenin ...
Isolation and synthesis of the first natural 6-hydroximino 4-en-3-one- steroids from the sponges Cinachyrella spp
(1997)
Two new 6-hydroximino-4-en-3-one steroids: (24R, 6E)-24-ethylcholest-6-hydroximino-4-en-3-one (1) and (6E) cholest-6-hydroximino-4-en-3-one (2), accompanied by the known cholest-4-en-3-one were isolated from a mixture of ...