ABSTRACT

T. inula. SESQUITERPENOIDS: 9-acetoxytrixikingolide 2′-methylbutyrate, 9αisovaleryloxytrixikingolide-2′-methylbutyrate, 9α-seneciolyoxy-12-desoxotrixikingolide2′-methylbutyrate, 9-valeryloxytrixikingolide 2′-methylbutyrate.