So long as the pure compound from your extract shows biological activity, the synthesized compound will behave the same way.

Things that could cause the synthesized compound to exhibit different biology:

• The extracted compound behaves in synergy with something else in the extract (the extracted compound isn't pure in this case).
• The extracted compound is a protein  that requires a particular folding not achieved in the synthesized product.

There is no general answer. In many cases synthetic compounds show similar effect. In some cases the presence of trace contaminants originating from chemical synthesis or co-isolated from plants can change the effect in an unexpected way.

Moreover there is large group of compounds that cannot be synthesised at all, in a specific form (e.g. enantiomers) or with sufficient yield or price.

I the Infrared the OH must have an absorption. IR is for functional group doesnt matter where it is attached organic or inorganic molecule/specie.

Thank you for your answers. The molecule is immunoprotective, more of spermiogenesis, and used to produce plenty of progeny in single conception. It has application directly.

Sir, yes sir, synthesized molecule is also exhibit equal potency and we can improve potency by optimizing the structure of compound also.