Abstract:
:Four undescribed 23,24-O-isopropylidene-19(18 → 17)-abeo-28-noroleanane-derived spirocyclic triterpenoids and an undescribed 28-noroleanane-derived spirocyclic triterpenoid, together with five known 28-noroleanane-derived spirocyclic triterpenoids, were isolated and identified. In addition, three undescribed iridoid glucosides and four known ones were also identified. All the isolates were identified using spectroscopic techniques, and the absolute configurations of 28-noroleanane-derived spirocyclic triterpenoids were determined by CD method for the first time. Additionally, the alkaline hydrolysis method and HPLC analysis were applied to confirm the moieties of the iridoid glucosides. The fraction and isolates were evaluated for cytotoxic activity on cervical cancer (Hela), human promyelocytic leukemia (HL-60), and breast cancer (MCF-7) cell lines. Among them, phlomisu E possessed an aldehyde group showed the most potent cytotoxic effect with IC50 value less than 10 μM.
journal_name
Phytochemistryjournal_title
Phytochemistryauthors
Le DD,Nguyen DH,Zhao BT,Kim JA,Kim SK,Min BS,Choi JS,Woo MHdoi
10.1016/j.phytochem.2018.06.003subject
Has Abstractpub_date
2018-09-01 00:00:00pages
138-146eissn
0031-9422issn
1873-3700pii
S0031-9422(18)30177-8journal_volume
153pub_type
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