Novel terpenoids from the Sea Hare <i>Aplysia punctata</i>
Bibliographic record
Abstract
The structures of 23 compounds isolated from the sea hare Aplysia punctata have been determined by spectroscopic means. These include four new diterpenes (14): 1, neopargueroldione, is a tricyclic diterpene featuring a novel octane-1,5-dione A ring; 2 is deacetylparguerol; 3, punctatene acetate, shares the same [2:2:1] bicyclic system as dactylomelol from A. dactylomela; and 4, punctatol, has the same skeleton as laurencianol of algal origin. Diastereomeric sesquiterpenes 5 and 6 are similar to some compounds of algal origin, as is 7, perforatol, which shares the same carbon framework as perforatone from Laurentia perforata. In addition we have isolated 16 known compounds comprising 12 sesquiterpenes: perforenone, laurene, α-bromocuparane, α-isobromocuparane, laurinterol, debromoallolaurinterol, laurenisol, isofiliformin, obtusenol, β-snyderol, a dibromochamigrane, a friedosnyderane, two diterpenes: isoconncindiol and parguerol, and two C-15 acetogenins: laurenyne and laurencenyne. These known compounds have been reported previously either from other Aplysia species or from Laurencia species.Key words: Aplysia punctata, terpenoids, Sea Hare constituents.
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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) | 0.001 | 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".