Page 91 - Pharmd general phytochemistry I-Final2024_LEUCTERS

The primary glycosides of Digitalis lanata
• lanatoside A,

• lanatoside B and

• lanatoside C

are acted upon by specific enzymes which split the terminal glucose,
giving the corresponding 2 ry glycosides;

• acetyl-digitoxin,

• acetyl-gitoxin, and

• acetyl -digoxin, respectively.

Primary glycoside Corresponding secondary
glycoside

lanatoside A acetyl-digitoxin,

lanatoside B acetyl-gitoxin

lanatoside C acetyl-digoxin

• The deacetyl-Ianatosides ( Purpurea glycosides A, B and
deslanoside) can be obtained by the alkaline hydrolysis of the
corresponding lanatosides.

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