Bibliographic record
Abstract
The total synthesis of callystatin A 128 and C 19- epi-callystatin 123 was achieved. The convergent strategy relied on the preparation of three fragments, the C1-6 lactone precursor 90 (chapter 5), the C7-12 fragment 108 (chapter 6) and the C13-22 polypropionate fragments 66 and 79 (chapter 4). The fragments were assembled using E-selective tributylphosphonium Wittig olefination reactions (chapter 7). The stereochemistry of the polypropionate fragments 66 (callystatin A) and 79 (C19- epi-callystatin A) was secured using an enantiomerically pure [3.2.1]oxabicycle which had been previously described in the literature. The further development and application of this [3.2.1]oxabicycle methodology comprises most of work described in this thesis and is covered in chapters 3 and 4.
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 | 0.007 |
| Meta-epidemiology (narrow) | 0.001 | 0.002 |
| Meta-epidemiology (broad) | 0.002 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.002 | 0.001 |
| Insufficient payload (model declined to judge) | 0.024 | 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; both teacher heads agree on what is shown here.
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".