Greener Cleavage of Protected Peptide Fragments from Sieber Amide Resin.
Greener Cleavage of Protected Peptide Fragments from Sieber Amide Resin.
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DOI:
10.1002/open.202200236
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发表时间:
2022-12
期刊:
影响因子:
2.3
通讯作者:
Williams, Daryl R.
中科院分区:
文献类型:
--
作者:
Al Musaimi, Othman;Gavva, Varshitha;Williams, Daryl R.
Following the successful introduction of two benign solvents for cleaving protected acid peptide fragments from 2‐chlorotrityl chloride (2‐CTC) resin, there is a need to green the cleavage process for obtaining protected peptide amide fragments. In this work, p‐xylene and toluene are introduced as greener alternates to dichloromethane (DCM) for preparing protected peptide amide fragments from a Sieber amide resin. The N‐dealkylation is a demanding chemical reaction, requiring that the cleavage protocol be optimised to ensure complete cleavage from the resin. After a 30 min reaction time, only 66 % of the final peptide product was retrieved even with the conventional dichloromethane solvent. Therefore, 120 min was considered sufficient to fully cleave the peptide from the Sieber amide resin. This work reaffirms the fact that greening strategies are far from detrimental, with green alternatives often outperforming their replaced counterparts. p ‐Xylene and toluene are shown to be greener alternatives to DCM for preparing protected peptide amides from Sieber amide resin for subsequent key reactions such as cyclisation and fragment condensation. Toluene can be considered a universal solvent for cleaving peptides from both 2‐chlorotrityl chloride (2‐CTC) and Sieber amide resins. Its use makes the recycling task easier and helps in implementing a circular economy closed‐loop approach.
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DOI:
10.3390/ph15020222
发表时间:
2022-02-13
期刊:
Pharmaceuticals (Basel, Switzerland)
影响因子:
--
作者:
Al Shaer D;Al Musaimi O;Albericio F;de la Torre BG
通讯作者:
de la Torre BG
影响因子:
2.1
作者:
Al Musaimi, Othman;Wisdom, Richard;Albericio, Fernando
通讯作者:
Albericio, Fernando
DOI:
10.3390/ph11020042
发表时间:
2018-05-07
期刊:
Pharmaceuticals (Basel, Switzerland)
影响因子:
--
作者:
Al Musaimi O;Al Shaer D;de la Torre BG;Albericio F
通讯作者:
Albericio F
影响因子:
5.2
作者:
Carbajo, Daniel;Fransen, Peter;Albericio, Fernando
通讯作者:
Albericio, Fernando
影响因子:
5.2
作者:
Castro, Vida;Rodriguez, Hortensia;Albericio, Fernando
通讯作者:
Albericio, Fernando