Willow is rich in salicin
, the basis of modern aspirin, which was first sold in 1899.
In fact, the original aspirin came from the inner back of willows, which contains salicin
But its active ingredient is salicin
, which has an antiinflammatory effect and is derived from willow trees.
The active ingredient in aspirin, acetyl salicylic acid, is a synthetic derivative of the compound salicin
, which occurs naturally in plants, notably the willow tree.
Yn 1897, mi wnaeth Felix Hoffmann greu cemegyn oedd wedi'i newid yn synthetig o salicin
, a'r planhigyn y gwnaeth o ei ddefnyddio oedd Spirea ulmaria, sef yr erwain.
Endoglucanase and [beta]-glucosidase activities were determined using carboxymethyl cellulose and salicin
(2-[hydroxymethyl]-phenyl-[beta]-D-glucopyranoside) as substrates, respectively.
, studies now report, does not cause stomach distress or bleeding, as aspirin does.
is a chemical found naturally in willow bark, the source of aspirin.
A characteristic constituent of WB is salicin
and its derivates (ESCOP 2003).
Preparation of sugar initiator SI2: The procedure of acetalization step was the same as for SI1, but in the case of SI2 salicin
Methanol extracts of rhizomes of the plant reportedly contained six polyoxygenated cyclohexane derivatives identified as (-)-6-acetylzeylenol (I), four acylated derivatives of 1-benzoyloxymethyl-1,6- epoxycyclohexan-2,3,4,5-tetrol (III-VI), a Diels-Alder adduct of 3-benzoyl-1-benzoyloxymethylcyclohexa-4,6dien-2,3-diol (VII), and a triacylated derivative of salicin
(IX), in addition to (-)-zeylenol (II), and crotepoxide (VIII).
causes damaged cells in the willow to die off before the whole tree becomes threatened with disease.