+)
formed a mixture of the 4-O-methyl- and 4-oxo-9-O-methyl ethers (1:1, overall yield 90%) that were
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Khusnutdinova, E.K. (2017) Keratoconus (KC) is the most common
form of keratoectasia characterized by changes in corneal
’ content in blood serum and in oral fluid and the clinical
form and severity of the disease has been traced