Abstract:
THIS INVENTION RELATES TO A CYCLOPENTYLPROPIONYL KETAL OF THE FORMULA
2-R,2-(Y-CH2-CH2-),3,3-(-O-R"-O-)CYCLOPENTANONE
WHEREIN R IS AN ALKYL HAVING 1 TO 3 CARBON ATOMS, Y IS A SUBSTITUENT SELECTED FROM THE GROUP CONSISTING OF -COO-LOWER ALKYL-COOH AND -C=N AND R" IS A LOWER ALKYLENE HAVING 2 TO 4 CARBON ATOMS, WHICH IS USED AS INTERMEDIATES IN THE PREPARATION OF 13-ALKYL GONAPENTAENES.
Abstract:
THIS INVENTION RELATES TO AN OPTICALLY ACTIVE LACTONE OF THE FORMULA
2-(O=),4A-R,5,5-(-O-R"-O-)-2,3,4,4A,5,6-HEXAHYDRO
CYCLOPENTA(B)PYRAN
WHERE R IS ALKYL HAVING 1 TO 3 CARBON ATOMS, R" IS A LOWER ALKYLENE HAVING 2 TO 4 CARBON ATOMS AND THE WAVY LINE INDICATES EITHER THE A OR B CONFIGURATION, WHICH MAY BE USED IN THE PREPARATION OF 13-ALKYL GONAPENTAENES.
WHERE R IS AN ALKYL HAVING 1 TO 3 CARBON ATOMS, R" IS A LOWER ALKYLENE HAVING 2 TO 4 CARBON ATOMS, R1, R2 AND R4 ARE SUBSTITUENTS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, LOWER ALKYL AND LOWER ALKOXY, R3 IS LOWER ALKYL, R5 AND R6 ARE SUBSTITUENTS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, A-LOWER ALKYL AND B-LOWER ALKYL AND THE WAVY LINE INDICATES EITHER THE A-CONFIGURATION OR THE B-CONFIGURATION, WHICH ARE USED AS INTERMEDIATES IN THE PREPARATION OF OPITCALLY ACTIVE 13-ALKYL GONAPENTAENES.