To study the synthesis of chiral precursor R(-)-mandelic acid obtained by asymmetric bioreduction of phenylglyoxylic acid.

目的研究生物不对称催化苯乙酮酸合成手性药物前体R（-）-扁桃酸。

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The total phenol extract mainly contains hydroxyl mandelic, 3, 4-dihydroxy phenylethyl alcohol, salidroside and indicant compound and other derivatives with salidroside as the mother nucleus.

总酚提 取物主要包括对羟基苯乙醇、3、4-二羟基苯乙醇、红景天苷以及以 其为母核的糖苷类化合物和其它衍生物。

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Mandelic acid was synthesized by means of ultrasonic phase transfer catalysis(PTC) method.

采用超声波相转移催化技术合成了扁桃酸。

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Mandelic acid was synthesized by means of ultrasonic phase transfer catalysis(PTC) method.

采用超声波相转移催化技术合成了扁桃酸。

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