Title:
【発明の名称】シクロアルキルアルキン類
Document Type and Number:
Japanese Patent JPH0610148
Kind Code:
B2
Abstract:
Compounds of the formula I wherein n is either 0 or 1; R1 and R2 is hydrogen and the other is hydrogen, hydroxy, oxo group, a protected hydroxy or protected oxo group; R3 is hydroxy oxo group, =CH-CH2-OH, =CH-CHO or one of the foregoing groups where the hydroxy or oxo functions are protected; R4 is -CO-OR6, -CO-R6, -CO-NR6R7, -CO-Cl or -SO2-R6; R6 is saturated or aromatic hydrocarbon; and R7 is saturated or aromatic hydrocarbon or hydrogen, are converted by cleavage of R4OH into corresponding cycloalkenes and protecting groups, if present, are hydrolyzed. The compounds obtained are valuable intermediates in carotenoid syntheses.
Inventors:
TEODOORU RUKAKU
MIRAN SOKUPU
EERITSUHI BIDOMAA
MIRAN SOKUPU
EERITSUHI BIDOMAA
Application Number:
JP15008492A
Publication Date:
February 09, 1994
Filing Date:
May 19, 1992
Export Citation:
Assignee:
HOFFMANN LA ROCHE
International Classes:
B01J31/02; C07B61/00; C07C29/60; C07C31/135; C07C33/14; C07C35/18; C07C403/00; (IPC1-7): C07C33/14; B01J31/02; C07C29/60; C07C35/18
Attorney, Agent or Firm:
Heiyoshi Odashima