结论：化合物1是一个新的二苯甲烷类衍生物，化合物2 - 6皆为紫玉盘属植物中首次分到。
CONCLUSION: compound 1 was a new diphenylmethane derivative, and compounds 2-6 were isolated from the genus Uvaria for the first time.
结论：化合物1是一个新的二苯甲烷类衍生物，化合物2 - 6皆为紫玉盘属植物中首次分到。
CONCLUSION: compound 1 was a new diphenylmethane derivative, and compounds 2-6 were isolated from the genus Uvaria for the first time.
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