I synthesized olestra from biodiesel, sugar, and soap with a sodium metal catalyst. I also describe some of the history of olestra's development.

Procedure that I used (Example 1) https://patents.google.com/patent/US3...
Other resources:
https://patents.google.com/patent/US2...
https://patents.google.com/patent/US4...
https://sci-hub.se/https://doi.org/10...

Biodiesel: https://www.e-education.psu.edu/egee4...
https://extension.okstate.edu/fact-sh...
   • Biodiesel Production Demonstration - ...  

Epogee fat substitute:
https://www.epogee.com/the-technology
https://healthsmartfoods.com/products...

Potassium oleate soap synthesis:
https://lipidlibrary.aocs.org/documen...

Studies on gastro distress and calorie compensation:
https://sci-hub.se/https://doi.org/10...
https://sci-hub.se/10.1006/rtph.1997....
https://sci-hub.se/10.1001/jama.279.2...

Anal leakage MadTV:    • MadTV Spishak Cholestra 10% less anal...  

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