雌二醇分子式的C3和C17位各有一羟基；异黄酮和黄酮类化合物是由一个异环化合物名吡喃(Pyran)的将二个酚环连结在一起，形成一个骨架，两个酚环的C7和C′4位各有一对应于雌二醇C3和C17位的羟基；而且异黄酮类化合物C7和C′4位...
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Tetrahydro-4H-pyran-4-one 四氢吡喃酮 ; 四氢 ; 四氢吡喃 ; 吡喃
tetrahydro-2H-pyran-4-ol 四氢 ; 四氢吡喃醇 ; 四氢吡喃
TETRAHYDRO-PYRAN-3-OL 羟基四氢吡喃
tetrahydro-2H-pyran 氨甲基四氢吡喃 ; 碘甲基四氢吡喃 ; 甲胺四氢吡喃 ; 溴甲基
Pyran Copolymer 吡喃共聚物
pyran ring 吡喃环
4-Dihydro-2H-pyran 二氢吡喃
N an unsaturated heterocyclic compound having a ring containing five carbon atoms and one oxygen atom and two double bonds. It has two isomers depending on the position of the saturated carbon atom relative to the oxygen 吡喃
Pyran Derivatives is widespread in erigeron, And the treatment showed a strong stroke, And the regulation of blood pressure, the protection effect For ischemia-reperfusion injury.
吡喃酮类化合物在飞蓬属植物中广泛存并且显示了强的治疗脑中风及调节血压的作用，以及对缺血再灌注损伤的保护作用。
With 2 - phenyl benzo - pyran structure, also known as anthocyanin pigments, the base element for the flower pigments, 2 - phenyl - benzo - pyrone, also known as anthoxanthin class.
具有2 -苯基苯并吡喃结构的也称为花青素类色素，为花色索的基元，2 -苯基苯并吡喃酮也称花黄素类。
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