求翻译：alkylation chemistry developed above on 1 H-pyrazolo[3,4- d ]pyr-imidin-4-amine (4) gave multiple products in poor yields. This是什么意思？

待解决

悬赏分：1 - 离问题结束还有

alkylation chemistry developed above on 1 H-pyrazolo[3,4- d ]pyr-imidin-4-amine (4) gave multiple products in poor yields. This

问题补充：

匿名	2013-05-23 12:21:38

匿名	2013-05-23 12:23:18

匿名	2013-05-23 12:24:58

匿名	2013-05-23 12:26:38 烷基化化学上 1 H pyrazolo [3，4-d] pyr-imidin-4-胺 (4) 以上开发了多个产品差收益率。这

匿名	2013-05-23 12:28:18

本站所有资料来源于互联网，如有侵权，请联系本站，青云翻译网沪ICP备07509807号-1 鄂公网安备42018502000813号