"These similarities are known as the “morphine rule” in...
User MarquisDeVice, in the AskChemistry subreddit,
"These similarities are known as the “morphine rule” in which compounds generally incorporate into their carbon framework (1) a…
A better/more professional version of what you are looking...
User next_redsteppa, in the BabyBees subreddit,
A better/more professional version of what you are looking for: "The DARK Side of Total Synthesis: Strategies and Tactics in…
[this...
User CowardiceMachine2000, in the The Hive: A place for all the busy bees of the net to share their dreams with one another. subreddit,
[this paper](https://pubs.acs.org/doi/abs/10.1021/acschemneuro.7b00528) does a pretty good job