Synthesis of Analogues of Natural Product ‘Antheminone A’ and Evaluation of Their Anti-Cancer Activity
Bibliographic record
Abstract
Synthesis of two novel compounds (1a and 1b) derived from analogue of antheminone A (1c) and their evaluation of anti-cancer activities are hereby described. This synthesis involved a multi-step reaction sequence involving the use of natural product (-)-quinic acid (1d) and unsymmetrical dicoumarol (1e) as precursors (Figure 1). Unsymmetrical dicoumarol (1e), a potent inhibitor of NQO1 was synthesized by coupling 4-hydroxyl coumarin and an appropriate benzaldehyde. Thus, in order to facilitate drug penetration through the barriers of cell membrane to NQO1 location, compound (1e) was re-modified by coupling with an analogue of antheminone A (1c). Spectral analyses of the products were carried out in order to confirm the identity of the compounds. Interestingly, the compounds which were obtained in good to moderate yield (51-68%) exhibited toxicity against the non-small cancer cell line, A549.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.001 | 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) | 0.001 | 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".