In this paper about group potential and the transfer of acetyl and phosphoryl groups Lipmann proposed that acetyl phosphate acted as an acetyl door in the biosynthesis of essential metabolites and that ATP functioned as a generalized energy carrier. In this essay he also introduced the term ‘energy-rich phosphate bond’ and the squiggle to denote this distinction (~P)” (Kresge, Simoni and Hill, “Fritz Lipmann and the discovery of coenzyme A,” Journal of Biological Chemistry 280 (2005): 164-166.)

Discovery of co-enzyme A and its importance for intermediary metabolism. This discovery illuminated “the process by which cells make available the energy to drive their manufacturing processes” (Judson, p. 245).

In 1953 Lipmann shared the 1953 Nobel Prize in Physiology or Medicine with Sir Hans Krebs "for his discovery of coenzyme A and its importance for intermediary metabolism." In his Nobel Lecture (1953) Lipmann spoke “very tentatively” of the first clues that “may foreshadow” extension of his concept to proteins and nucleic acids. See also 751.3.

Lipmann shared the 1953 Nobel Prize in Physiology or Medicine for his discovery of coenzyme A, an important catalytic substance involved in the cellular conversion of food into energy. He first described the discovery in his paper entitled "Acetylation of sulfanilamide by liver homogenates and extracts," Journal of Biological Chemistry 160, 1945. See No. 14284. In the above paper (No. 751.3) Lipmann isolated the new co-factor and named it coenzyme A.

Lipmann and Tao isolated, purified, and characterized biochemically an enzyme which they called "adenyl cyclase." They stated that this enzyme is responsible for producing "cyclic AMP" in E. coli.
Digital facsimile from PubMedCentral at this link.

(Thanks to Juan Weiss for this reference and its interpretation.)