Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: (R)-(9H-Fluoren-9-yl)methyl (1-chloro-4-methyl-1-oxopentan-2-yl)carbamate, is researched, Molecular C21H22ClNO3, CAS is 198544-60-4, about Total Solid Phase Syntheses of the Quinazoline Alkaloids: Verrucines A and B and Anacine.Electric Literature of C21H22ClNO3.
The first total syntheses of verrucines A and B and anacine (revised structure) were accomplished on Sasrin resin. This work confirmed the structure of verrucine A and unambiguously showed verrucine B to be a derivative of D-phenylalanine and L-glutamine. The study also proved that anacine and its epimer are quinazoline alkaloids, not benzodiazepines as originally proposed. 1-Hydroxyverrucine B, derived from air oxidization of verrucine B, was also isolated and characterized.
There is still a lot of research devoted to this compound(SMILES：O=C(OCC1C2=C(C3=C1C=CC=C3)C=CC=C2)N[C@H](CC(C)C)C(Cl)=O)Electric Literature of C21H22ClNO3, and with the development of science, more effects of this compound(198544-60-4) can be discovered.
Reference:
Thiomorpholine – Wikipedia,
Thiomorpholine | C4H9NS – PubChem