Two new bisabolane sesquiterpenes were isolated from the roots of Leontoptdium longifolium. Their structures were elucidated as 4α, 5α-diacetoxy-lα-angeloyloxybisabol-2, 9, ll-triene and 4α, 5α-diacetoxy-lα-ange...Two new bisabolane sesquiterpenes were isolated from the roots of Leontoptdium longifolium. Their structures were elucidated as 4α, 5α-diacetoxy-lα-angeloyloxybisabol-2, 9, ll-triene and 4α, 5α-diacetoxy-lα-angeloyloxy-ll-hydroxybisabol-2, 9-diene by spectroscopic methods including the 2D NMR techniques.展开更多
A new xanthanolide was isolated from the aerial parts of Carpesium longifolium. Its structure was elucidated as 1, 4-epoxy-5?hydroxy-10酘-xantha-11(13)-en-12, 8?olide by spectral methods (HRMS, 1D and 2D NMR).
文摘Two new bisabolane sesquiterpenes were isolated from the roots of Leontoptdium longifolium. Their structures were elucidated as 4α, 5α-diacetoxy-lα-angeloyloxybisabol-2, 9, ll-triene and 4α, 5α-diacetoxy-lα-angeloyloxy-ll-hydroxybisabol-2, 9-diene by spectroscopic methods including the 2D NMR techniques.
文摘A new xanthanolide was isolated from the aerial parts of Carpesium longifolium. Its structure was elucidated as 1, 4-epoxy-5?hydroxy-10酘-xantha-11(13)-en-12, 8?olide by spectral methods (HRMS, 1D and 2D NMR).
