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KMID : 0370219620060010001
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Yakhak Hoeji
1962 Volume.6 No. 1 p.1 ~ p.4
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Structural Study on new Tanin, Polygagallin, from Acerginnala Max
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Abstract
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A new tannin, palygagallin, related to acertannin, is isolated from air-dried leaves of Acer ginnala Max. as prismatic cryitals with 1/2 H_(2)O per mole, m.p. 154-155° and [α]^(29)_(D)+43.79℃,
Polyganallin gives hexaxcetate, m.p. 164.5℃. [α]^(23)_(D)+42°, on treating with acetic anhydride and on tresting with diazomethane, gives trimethylether, m.p. 176℃, [α]^(22)_(D)+53.43, which yields triacetate, m/p/ 160.5℃, [α]^(22)_(D)+132.5°, on acetylation and is not attacked by periodate. On hydrolysis, trimethoxypolygagallin yield one mole of polygalitol and that of trimethoxygallic acid.
By the above results polygalallin has been established as 3-galloylpolygalitol.
(Received February 10, 1962)
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