Chakraborty, Amit published the artcileDisulfide-based protecting groups for the cysteine side chain, Formula: C5H10OS, the publication is Organic Letters (2020), 22(24), 9644-9647, database is CAplus and MEDLINE.
Two new disulfide-based protecting groups (SIT and MOT) (I and II) are proposed for Cys thiol in the substitution of StBu, which is often difficult to remove. Both groups are based on a secondary thiol with a branched point in the β-position for an efficient modulation of its lability and/or stability. This unique structure allows them to be fully compatible with Fmoc/tBu SPPS (Fmoc = 9-fluorenylmethoxycarbonyl). At the end of the synthesis, these groups are removed in a straightforward manner with dithiothreitol with some H2O.
Organic Letters published new progress about 57124-87-5. 57124-87-5 belongs to tetrahydrofurans, auxiliary class Tetrahydrofuran,Thiol, name is 2-Methyl-3-tetrahydrofuranthiol, and the molecular formula is C5H10OS, Formula: C5H10OS.
Referemce:
https://en.wikipedia.org/wiki/Tetrahydrofuran,
Tetrahydrofuran | (CH2)3CH2O – PubChem