摘要：

Historical .Review and Theoretical Considerations 1. Chemical evolution 2. Evolution of the Earth 3. Arnino acids 4. }unction of cyanide . 5. Heterocyclic bases 6. Sugars 8. Organic acids and hy _"J:,ocarbons 9. Porphyrins 10. Polymerizations 11. Dincussion Part. I: Use of Cyanamide and Related Compounds to Effect Dehydration Condensation 1. General introduction and back~~~d 2. Experimental ITEthbd13 general : 3. Experimental data and discussion' A. Nuc1eos1des · B. Phosphate esters 1) Adenosine rronophosphate· 2) Ribose-5-phosphate .. ]

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