IP Library Granted Patent US 7,169,591
Granted Patent B1
US 7,169,591 · App. 10/088,991 · Granted Jan 30, 2007

Preparation of enantio-specific epoxides

Assignee: Shaw Environmental & Infrastructure, Inc.
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Quick Facts
Patent No.
US 7,169,591
App. No.
10/088,991
Granted
Jan 30, 2007
Kind
B1
Abstract

A method for converting alkenes into epoxides and, particularly, to convert alkenes into enantio-specific epoxides by the use of enzymes which may be in their naturally-occuring (native) form or in mutated form, such as a native or mutated non-haem diiron-containing monooxygenase, and novel compounds produced thereby.

Claims (10)

1. A method for preparing a single enantiomeric species of an epoxide comprising contacting an alkene with a native non-haem diiron-containing monooxygenase and recovering said epoxide produced.

2. The method of claim 1 wherein said monooxygenase is a toluene monooxygenase.

3. A method for preparing an epoxide comprising contacting an alkene with a mutated non-haem diiron-containing monooxygenase and recovering said epoxide produced.

4. The method of claim 3 wherein said monooxygenase is a toluene monooxygenase.

5. A method for preparing an epoxide comprising contacting an alkene with a non-haem diiron-containing monooxygenase mutated by the substitution of at least one amino acid residue.

6. The method of claim 5 wherein said monooxygenase is a toluene monooxygenase.

7. A process for producing a desired ratio of epoxide enantiomers comprising contacting an alkene with a mutated non-haem diiron monooxygenase.

8. A process for producing a desired ratio of epoxide enantiomers comprising contacting an alkene with a native non-haem diiron monooxygenase.

9. The process of claim 7 , wherein said desired ratio is 0–100:100–0 of R:S enantiomers.

10. The process of claim 8 , wherein said desired ratio is 0–100:100–0 of R:S enantiomers.

Assignments (5)
RELEASE OF SECURITY INTEREST Recorded May 28, 2024
From: U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION
To: APTIM INTELLECTUAL PROPERTY HOLDINGS, LLC (FKA SHAW INTELLECTUAL PROPERTY HOLDINGS, LLC); APTIM GOVERNMENT SOLUTIONS, LLC (FKA CB&I GOVERNMENT SOLUTIONS, LLC)
Reel/Frame 067535/0309 →
CHANGE OF NAME Recorded Jul 31, 2017
From: CB&I GOVERNMENT SOLUTIONS, LLC
To: APTIM GOVERNMENT SOLUTIONS, LLC
Reel/Frame 043379/0251 →
SECURITY INTEREST Recorded Jul 6, 2017
From: SHAW INTELLECTUAL PROPERTY HOLDINGS, LLC; CB&I GOVERNMENT SOLUTIONS, LLC; LFG SPECIALTIES, L.L.C.; CB&I ENVIRONMENTAL & INFRASTRUCTURE, INC.
To: U.S. BANK NATIONAL ASSOCIATION, AS NOTES COLLATERAL AGENT
Reel/Frame 042915/0657 →
SECURITY INTEREST Recorded Jun 30, 2017
From: SHAW INTELLECTUAL PROPERTY HOLDINGS, LLC; CB&I GOVERNMENT SOLUTIONS, LLC; LFG SPECIALTIES, L.L.C.; CB&I ENVIRONMENTAL & INFRASTRUCTURE, INC.
To: UBS AG, STAMFORD BRANCH, AS ABL COLLATERAL AGENT
Reel/Frame 042875/0116 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 15, 2006
From: STEFFAN, ROBERT J.; MCCLAY, KEVIN R.
To: SHAW ENVIRONMENTAL & INFRASTRUCTURE, INC.
Reel/Frame 018540/0285 →
Continuity (1)
Provisional Application 6013660200 · May 28, 1999