Cis-trãns Isomeric Carotenoids Vitamins A and Arylpolyenes

First Part: Isoprenic Polyenes.- I. Carotenoids: Introduction.- II. Number and Types of cis Carotenoids. Steric Hindrance.- III. Some Properties of cis Carotenoids.- IV. Cis-trans Isomerism and UV Spectra.- V. Preparation of cis Carotenoids by Direct Rearrangement of the All-trans Form.- VI. Preparation of cis Carotenoids by Total Synthesis.- VII. Naturally Occurring cis and Polyds Carotenoids.- VIII. Some General Remarks on Configurational Assignments.- IX. Configurational Assignments in Certain Stereoisomeric Sets.- X. Lower-molecular Weight Carotenoid-carboxylic Acids: Bixin and Crocetin.- XI. Cis-trans Isomerism and Provitamin A Effect of Carotenoids.- XII. Vitamins A and Retinenes.- Second Part: Unbranched Arylpolyenes. Introductory Remarks.- XIII. I-Monoaryl-polyenes.- XIV. ?,?-Diphenylpolyenes and Related Compounds.- XV. Cumulenes with. Aromatic Terminal Groups.- XVI. Polyene Azines.- XVII. Bibliography.- Index of Authors.- Index of Subjects.