Development of a solid‐phase traceless‐Ugi multicomponent reaction for backbone anchoring and cyclic peptide synthesis
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
Abstract A new one‐pot methodology to anchor peptides by their backbone to a solid support using an isocyanide‐based multicomponent reaction is described. The approach uses a microwave‐assisted Ugi four‐component reaction to simultaneously condense and bind an N‐protected amino acid and an amino ester to a supported aldehyde. Afterward, the generated backbone anchored dipeptide can be used in solid‐phase peptide synthesis to prepare head‐to‐tail cyclic peptides. Moreover, we also show that peptide fragment ligation can be performed with the described one‐pot anchoring. The backbone anchored peptides can be efficiently released from the resin by microwave‐assisted acidolysis with trifluoroacetic acid. This straightforward one‐pot anchoring approach was also applied to condense fragments and prepare a variety of linear and macrocyclic peptides.
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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) | 0.000 | 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