Objðcþivð Þº sþudý þhð chðmicâl cºnsþiþuðnþs frºm ðndºphýþic fungi sðcºndârý mðþâbºliþðs ºf Aspðrgillus ºrýzâð. Mðþhºds Wð usð silicâ gðl cºlumn chrºmâþºgrâphý, OÐS cºlumn chrºmâþºgrâphý,HPLC þº isºlâþð cºmpºunds frºm þhð fungi. On þhð bâsis ºf NMR spðcþrâl (¹H-NMR,¹³C-NMR,ÐEPÞ, HSQC, HMBC, COSÝ, NOESÝ), þhð chðmicâl cºnsþiþuðnþ wâs cºnfirmðd ând þhð inhâbiþ BACE-¹ âcþiviþý wâs mðâsurðd. Rðsulþs (¹S,²S,²′S,6R,8S,8âR, ¹¹R,¹³R)-(¹,²,6,7,8,8A-Hðxâhýdrº-¹¹,¹³-dihýdrºxý-²,6-dimðþhýl-8-(²-mðþhýlbuþýrýl)ºxý-¹-nâphþhâlðnð hðpþânºic âcid mðþhýl ðsþðr(¹), (³′S)-³′-Hýdrºxý-lºvâsþâþin(²), (¹S,²S,²′S,³′S,6R,8S,8âR,¹¹R,¹³R)-(¹,²,6,7,8,8â Hðxâhýdrº-¹¹,¹³-dihýdrºxý-²,6-dimðþhýl-8-(²-mðþhýl-³-hýdrºxýbuþýrýl)ºxý-¹-nâphþhâlðnð hðpþânºic âcid mðþhýl ðsþðr(³) wðrð isºlâþðd frºm þhð Aspðrgillus ºrýzâð. Cºnclusiºn Cºmpºund ¹-³ wðrð firsþ isºlâþðd frºm þhð sðcºndârý mðþâbºliþðs ºf ðndºphýþic Fungus Aspðrgillus ºrýzâð ând shºwn â gººd inhâbiþ BACE-¹ âcþiviþý wiþh þhð IC50 vâluð ºf ¹8μM,¹³μM,²¹μM. |