TY - JOUR
T1 - Athenolide A, a new steroidal lactone from the leaves of Athenaea martiana (Solanacea) determined by means of HPLC-HRMS-SPE-NMR analysis
AU - Silva, Eder L.
AU - Almeida-Lafetá, Rita C.
AU - Borges, Ricardo M.
AU - Stærk, Dan
PY - 2018/1
Y1 - 2018/1
N2 - Athenaea (Solanaceae) is an endemic genus belonging to the Brazilian Atlantic Rainforest. Recently, botanical investigations suggested the re-evaluation of the generic status of the genus Athenaea as a synonym of Aureliana. In this study, the first investigation of the Athenaea genus performed on Athenaea martiana by means of HPLC-HR-MS-SPE-NMR combined with high-resolution radical scavenging profile led to identification of several phenolic acids as radical scavengers: protocatechuic acid (1), 4-hydroxybenzoic acid (2), caffeic acid (3), vanillic acid (4), and ferulic acid (6). Additional analysis revealed a new steroidal lactone, named athenolide A (9). Their structures were elucidated by extensive use of NMR spectroscopy as well as HR-MS. Chemotaxonomic considerations based on these results supported the chemical relationships between the Athenaea and Aureliana genera, in agreement with the recent botanical findings.
AB - Athenaea (Solanaceae) is an endemic genus belonging to the Brazilian Atlantic Rainforest. Recently, botanical investigations suggested the re-evaluation of the generic status of the genus Athenaea as a synonym of Aureliana. In this study, the first investigation of the Athenaea genus performed on Athenaea martiana by means of HPLC-HR-MS-SPE-NMR combined with high-resolution radical scavenging profile led to identification of several phenolic acids as radical scavengers: protocatechuic acid (1), 4-hydroxybenzoic acid (2), caffeic acid (3), vanillic acid (4), and ferulic acid (6). Additional analysis revealed a new steroidal lactone, named athenolide A (9). Their structures were elucidated by extensive use of NMR spectroscopy as well as HR-MS. Chemotaxonomic considerations based on these results supported the chemical relationships between the Athenaea and Aureliana genera, in agreement with the recent botanical findings.
U2 - 10.1002/cbdv.201700455
DO - 10.1002/cbdv.201700455
M3 - Journal article
C2 - 29094514
SN - 1612-1872
VL - 15
JO - Chemistry & Biodiversity
JF - Chemistry & Biodiversity
IS - 1
M1 - e1700455
ER -