Chemistry is traditionally divided into organic and inorganic chemistry. SDS of cas: 16251-45-9, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 16251-45-9
Total Synthesis of Tambromycin Enabled by Indole C-H Functionalization
The total synthesis of tambromycin (1), a recently isolated tetrapeptide, is reported. This unusual natural product possesses a highly modified tryptophan-derived indole fragment fused to an alpha-methylserine-derived oxazoline ring, and a unique noncanonical amino acid residue named tambroline (11). A convergent synthesis of tambromycin was achieved by a 13-step route that leveraged recent developments in the field of C-H functionalization to prepare the complex indole fragment, as well as an efficient synthesis of tambroline that featured a diastereoselective amination of homoproline.
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Reference：
Oxazolidine – Wikipedia,
Oxazolidine | C3H2183NO – PubChem