Chloroquines will be tried since they already pass the "safe" bar.
However, I suspect that if they worked "in vivo", we would have compelling data on that from China already. The fact that we don't have such data suggests that they don't.
We seem to have much better data about the effectiveness of standard anti-virals already.
Relevant XKCD: https://www.xkcd.com/1217/
Chloroquines will be tried since they already pass the "safe" bar.
However, I suspect that if they worked "in vivo", we would have compelling data on that from China already. The fact that we don't have such data suggests that they don't.
We seem to have much better data about the effectiveness of standard anti-virals already.