Lanostane-Type Triterpenoids from Scilla scilloides and Structure Revision of Drimiopsin D
Bibliographic record
Abstract
Scilla scilloides (Lindl.) Druce is a perennial herb belonging to the Liliaceae family, also compiled in Hyacinthaceae family in the relatively new classification system [ 1 ]. The bulbs or the whole plants have been used as a foodstuff, a traditional Chinese medicine for promoting blood circulation, an analgesic, an anti-inflammatory agent, and treatment of heart failure and arrhythmia [ 2 ]. Previous chemical investigations on S. scilloides reported homoisoflavones, lanostane-type and norlanostane-type triterpenoids, xanthones, lignans, etc. [ 3 – 10 ]. As part of a BioBioPha ( http://www.chemlib.cn ) objective to assemble a large-scale natural product library valuable in the discovery of new drug leads from nature [ 11 – 14 ], the phytochemical investigation on the whole plants of S. scilloides led to isolation of two new lanostane-type triterpenoids, namely scillascillol ( 1 ) and scillascillone ( 2 ), a new norlanostane-triterpene glycoside, namely scillascilloside B-1 ( 3 ), together with two known norlanostanes, 15-deoxoeucosterol ( 4 ) [ 4 ] and 3-dehydro-15-deoxoeucosterol ( 5 ) [ 4 ], and three known xanthones, drimiopsin D ( 6 ) [ 15 ], drimiopsin C ( 7 ) [ 15 ] and norlichexanthone ( 8 ) [ 16 ] (Fig. 1 ). This paper describes the isolation and structural elucidation of new lanostane-type triterpenoids and structure revision of a xanthone drimiopsin D.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".