Preparation of 24 alkyl analogs of cholecalciferol and...

Details Preparation of 24 alkyl analogs of cholecalciferol and... Preparation of 24 alkyl analogs of cholecalciferol and...

2011-03-29

2011-03-29

Qazi, Sabiha (Department: 1612)

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

9,10-seco- cyclopentanohydrophenanthrene ring system doai

C552S653000

Reexamination Certificate

active

07915241

ABSTRACT:
Disclosed is a process for the preparation of 24-alkyl analogs of cholecalcyferol of Formula 1 having a (5E) or (5Z) configuration, wherein X represents a hydrogen atom, a hydroxy group or an OR1group, where R1, R2and R3may be the same or different and represent groups suitable for hydroxyl protection, and R4is a C1-6alkyl chain or a C1-6cykloalkyl group, optionally substituted with C1-3alkyl groups, especially for calcipotriol.The invention also provides new intermediates and non-racemic compounds being valuable synthones for the synthesis of pharmacologically active substances.

REFERENCES:
patent: 93305347.2 (1993-07-01), None
patent: 0578494 (1995-06-01), None
patent: PCT/DK86/00081 (1986-07-01), None
patent: WO 8700834 (1987-02-01), None
patent: PCT/PL98/00051 (1998-12-01), None
patent: WO 9936400 (1999-07-01), None
patent: PCT/PL03/00037 (2003-04-01), None
patent: WO 03/087048 (2003-10-01), None

Affiliated with

Also associated with

Rating

Preparation of 24 alkyl analogs of cholecalciferol and... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Preparation of 24 alkyl analogs of cholecalciferol and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation of 24 alkyl analogs of cholecalciferol and... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2624204