Pharmacokinetics and metabolism of the novel synthetic <i>C</i>‐nucleoside, 1‐(2‐deoxy‐<i>β</i>‐D‐ribofuranosyl)‐2,4‐difluoro‐ 5‐iodobenzene: a potential mimic of 5‐iodo‐2′‐deoxyuridine
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
1-(2-Deoxy-beta-D-ribofuranosyl)-2,4-difluoro-5-iodobenzene (5-IDFPdR) is one of the several unnatural 1-(2-deoxy-beta-D-ribofuranosyl)-2,4-difluoro-5-substituted-benzenes recently synthesized for evaluation as anticancer, antiviral and diagnostic imaging agents. This class of C-nucleosides was designed to exploit several potential advantages relative to classical 5-substituted-2'-deoxyuridines, including stability towards phosphorolysis by pyrimidine phosphorylase, increased lipophilicity that may alter their ability to cross the blood-brain-barrier, and a greater resistance towards catabolism and deiodination. The physiochemical evaluation of 5-IDFPdR showed high lipophilicity (log P = 2.8), moderately high protein binding (70-75%), stability towards phosphorolysis (e.g. no evidence of metabolic deglycosylation) by thymidine phosphorylase, and minimal microsomal metabolism in vitro. Pharmacokinetic studies of 5-IDFPdR in rat were characterized by a short elimination half-life (9-12 min), modest urinary elimination in pooled 0-24 h urine specimens (10-14%, including 2% as unconjugated drug) and high oral bioavailability (F = 0.96). Both glucuronide and sulfate metabolites were present in urine. Glucuronidation was the predominant conjugation pathway.
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.
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 | 0.001 |
| 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 it