Brady, Stephen F. published the artcileSome novel, acid-labile amine protecting groups, SDS of cas: 20117-47-9, the publication is Journal of Organic Chemistry (1977), 42(1), 143-6, database is CAplus and MEDLINE.
RO2C-Phe-OH [I; R = cyclopropylmethyl (CP), 1-methylcyclobutyl (MCB), cyclobutyl, 1-methylcyclohexyl, 1-cyclopropylethyl] and R1O2C-Phe-Ala-OMe (R1 = CP, MCB) were prepared After 48 hr in 50% HOAc, >99% of MCBO2C-Phe-OH (II) remained unchanged, whereas under the same conditions 10-15% of BOC was cleaved from BOC-Phe-OH. However, the complete removal of MCBO2C was achieved by treating II with CF3CO2H at 25° for 30 min. ROH were treated with COCl2 to give RO2CCl which were treated with phenylalanine or with H-Phe-OMe and saponified to give I.
Journal of Organic Chemistry published new progress about 20117-47-9. 20117-47-9 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic cyclic hydrocarbon,Alcohol, name is 1-Methylcyclobutan-1-ol, and the molecular formula is C5H10O, SDS of cas: 20117-47-9.
Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts