.

Pharmaceutical Business Intelligence

  • Anticipate P&T budget requirements
  • Evaluate market entry opportunities
  • Find generic sources and suppliers
  • Predict branded drug patent expiration

► Plans and Pricing

Upgrade to enjoy subscriber-only features like email alerts and data export. See the Plans and Pricing

DrugPatentWatch Database Preview

Claims for Patent: 3,920,809

« Back to Dashboard

Claims for Patent: 3,920,809

Title: Dibenzo(b,d)pyranone dispersions
Abstract:1-Hydroxy-3-alkyl-9-keto or 9-hydroxyhexahydro dibenzo[b,d]pyrans, useful as tranquilizers or hypotensive agents are dispersed with PVP or polyethylene glycol.
Inventor(s): Thakkar; Arvind L. (Indianapolis, IN)
Assignee: Eli Lilly and Company (Indianapolis, IN)
Application Number:05/413,012
Patent Claims: 1. A dispersion of 2-20 parts of polyvinylpyrrolidone having a molecular weight in the range 10,000-360,000 with one part of a compound of the formula ##SPC2##

wherein Z is ##EQU4## or ##EQU5## wherein each R is individually hydrogen or C.sub.1 -C.sub.3 alkanoyl, wherein R.sup.3 is hydrogen or methyl, wherein each R.sup.2 is either hydrogen or methyl, and both R.sup.2 groups are the same, and wherein R.sup.1 is C.sub.1 -C.sub.6 alkyl.

2. A dispersion according to claim 1 containing 1 part of 1-hydroxy-3-(1',1'-dimethylheptyl)-6,6-dimethyl-6,6a,7,8,10,10a-hexahydro- 9H-dibenzo[b,d]pyran-9-one and 9 part of a polyvinylpyrrolidone having a molecular weight in the range 10,000-360,000.

3. A dispersion according to claim 1 wherein the compound is 1-hydroxy-3-(1',1'-dimethylheptyl)-6,6-dimethyl-6,6a,7,8,10,10a-hexahydro- 9H-dibenzo[b,d]pyran-9-one.

4. A dispersion according to claim 3 of polyvinylpyrrolidone of molecular weight 40,000 and 1-hydroxy-3-(1',1'-dimethylheptyl)-6,6-dimethyl-6,6a,7,8,10,10a-hexahydro- 9H-dibenzo[b,d]pyran-9-one.
« Back to Dashboard

For more information try a trial or see the database preview and plans and pricing

Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. thinkBiotech performs no independent verifification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.

`abc