In other words, the two enantiomers are mirror images of each other.

也就是说，这两种对映都是它们自己的镜像。

Transition-metal catalysts can be easier to handle than enzymes, but usually fail to distinguish between enantiomers.

过渡金属催化剂可能比酶更容易操作，但通常无法区分对映。

But it turns out that thalidomide's R enantiomer can actually switch to the S version while inside the human body.

但事实证明，萨力多胺中的R对映在人内还是可以转换成S变。

These two chemicals are mirror images known as enantiomers.

这两种化学物质是镜像， 称为对映。

" Enantiomers are..." - Hey, is that Chloe?

" 对映异构是..." -这不是克洛吗？

But it turns out that thalidomide’s R enantiomer can actually switch to the S version while inside the human body.

但事实证明，沙利度胺的 R 对映异构实际上可以在人内转换为 S 版本。

And that's because the different versions of chiral molecules—called enantiomers —are made up of all the same parts, but arranged differently.

这是因为手性分子的不同变——即对映——是由所有相同部分组成，但是却以不同形式排。

In the case of thalidomide, scientists discovered that the R enantiomer helped with morning sickness, but the S enantiomer caused those severe birth defects.

在萨力多胺中，科学家发现R对映有助于缓解晨吐，但是S对映则会引发严重的先天缺陷。

The S enantiomer is commonly sold over the counter as a vasodilator, and you can easily find it in vapor inhalers.

S对映通常是作为血管舒张药在柜台销售，你可以在蒸气吸入器中轻松找到它。

But if you position the " left-handed" , or S enantiomer, the same way, the hydrogen atom will be facing toward you.

但是如果你找到的是“左撇子”或是S对映，那么氢原子将面朝你。

And that’s because the different versions of chiral molecules — called enantiomers — are made up of all the same parts, but arranged differently.

那是因为不同版本的手性分子— — 称为对映—— 由所有相同的部分组成， 但排不同。

After researchers discovered that only the S version of thalidomide caused birth defects, they thought about isolating the R enantiomer so they could continue to use it to treat morning sickness.

当研究员门发现萨力多胺中仅有S变会导致先天缺陷后，他们考虑将R对映隔离出来，这样他们就能够继续使用萨力多胺治疗晨吐。

These groups are kind of like your fingers: in each enantiomer, the groups are attached to the chiral center in the opposite order, so they're mirror images of each other.

在每个对映中，这些组都逆序吸附在手性中心，因此它们变成了各自的镜像。

And because different receptors and enzymes inside your body react with molecules in very specific ways, the fact that enantiomers are mirror images means that they might react to things totally differently.

因为你内不同的受和酶会以非常具的方式和分子共同发生反应，事实上对映是镜像意味着它们可能对事情的反应完全不同。

The result of these two pieces of work is a field called asymmetric organocatalysis (the asymmetric part of the name referring to its ability to generate pure enantiomers), that is now rippling through industrial chemistry.

这两项工作的结果是一个被称为不对称有机催化的领域（这个名称的不对称部分指的是它产生纯对映的能力）现在正席卷工业化学界。

These groups are kind of like your fingers: in each enantiomer, the groups are attached to the chiral center in the opposite order, so they’re mirror images of each other.

这些基团有点像你的手指： 在每个对映异构中，这些基团以相反的顺序附着在手性中心， 所以它们是彼此的镜像。

These are molecules that have two forms which are mirror images of each other. This is important in the drug industry, for the different versions, known as enantiomers, can have different effects in the body.

这些分子有两种形式且互为镜像。这在制药行业很重要，因为不同对映，对人会产生不同的作用。

Dr List and Dr MacMillan found a way to have the best of both worlds: small-molecule catalysts that have no metal atoms in them, can turn out pure enantiomers, and often simplify multi-step reactions. That has significant industrial implications.

不含金属原子的小分子催化剂，可以生成纯净的对映，而且通常会简化多步反应。这具有重大的工业意义。

If you position the version of the molecule that's considered " right-handed" , called the R enantiomer, so the closest oxygen atom to the chiral center is below it, the hydrogen atom attached to the center will be facing away from you.

如果你找到了认为是“右撇子”的分子变，即R对映，那么离手性中心最近的氧原子就在它的下方，附在中心的氢原子将背朝你。