Five catechins (1-5) including a new compound rosacatechins A (1) and a new natural product (2), along with a lignan (6) were isolated from 70% aqueous acetone extracts of the flower buds of Rosa chinensis Jacq. Their structures were elucidated by extensive spectroscopic analysis. No cytotoxicity was detected on the anti-proliferative assay of these compounds against five cancer cell lines.

中文翻译：

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蔷薇（Rosa chinensis Jacq）花蕾中的儿茶素和木脂素。

五种儿茶素类（1 - 5）包括一个新的化合物rosacatechins A（1）和新的天然产物（2）中，用木脂素（沿6）从花蕾的70％的含水丙酮提取物中分离月季黄灯笼。通过广泛的光谱分析阐明了它们的结构。这些化合物针对五种癌细胞系的抗增殖试验未检测到细胞毒性。