This patent uses "Working examples", rather than "Prophetic examples", also called paper examples, that originates from the P2a AD trial describing actual findings and was filed Nov. 28, 2018. The priority date is well before the 2020 peer reviewed paper and any disclosure of the hypertension properties of A2-73.
I believe this is first and only Anavex patent I have seen so far based on Working examples.
The way to tell if a patent is based on Working or Prophetic examples is the tense they are written in.
A Prophetic example will be written in the present or future tense and if using past tense would be rejected, whereas a Working example is described in the past tense just as we see e.g. in Example of the hypertension patent: