Dithiophosphate derivatives as hydrogen sulfide release chemicals for improving plant growth and crop yield
AssigneeUniversity of Iowa Research Foundation
InventorsNed B. Bowden, Justin M. CARTER, Eric M. BROWN, Nimesh RANASINGHE, Arjun PAUDEL, Erin E. IRISH
Life of this patent
Estimating the term…
Abstract
The invention provides a compound of formula (I): wherein X, Y Z, R1, R2, and X+ have any of the values described in the specification. The compounds are useful to increase plant growth and/or to increase harvest yield.
Claims33
A method comprising, increasing growth or harvest yield by providing H2S to a plant or a seed through degradation of a compound of formula I;
- wherein:
- Y is O or S;
- Z is O or S;
- R1 is (C1-C20)alkyl, phenyl, or (C3-C20)cycloalkyl;
- and R2 is (C1-C20)alkyl, phenyl, or (C3-C20)cycloalkyl;
- or R1 and R2 taken together with the atoms to which they are attached form a 5-15 membered heterocyclic ring that is optionally substituted with one or more groups independently selected from the group consisting of (C1-C6)alkyl, (C3-C6)cycloalkyl, and phenyl, wherein any phenyl or cycloalkyl of R1 and R2 is optionally substituted with one or more groups independently selected from the group consisting of (C1-C6)alkyl, (C3-C6)cycloalkyl, and phenyl;
- and
- X+ is a suitable cation.
6-10. (canceled)
(canceled)
14-22. (canceled)
(canceled)
(canceled)
29-38. (canceled)
The method of claim 10, wherein R2 is phenyl that is optionally substituted with one or more groups independently selected from the group consisting of (C1-C6)alkyl, (C3-C6)cycloalkyl, and phenyl.
(canceled)
42-50. (canceled)
55-56. (canceled)
(canceled)
A composition comprising a compound of formula I;
- wherein:
- Y is O or S;
- Z is O or S;
- R1 is (C1-C20)alkyl, phenyl, or (C3-C20)cycloalkyl;
- and R2 is (C1-C20)alkyl, phenyl, or (C3-C20)cycloalkyl;
- or R1 and R2 taken together with the atoms to which they are attached form a 5-15 membered heterocyclic ring that is optionally substituted with one or more groups independently selected from the group consisting of (C1-C6)alkyl, (C3-C6)cycloalkyl, and phenyl, wherein any phenyl or cycloalkyl of R1 and R2 is optionally substituted with one or more groups independently selected from the group consisting of (C1-C6)alkyl, (C3-C6)cycloalkyl, and phenyl;
- and
- X+ is a suitable cation;
- and a suitable agricultural carrier.
61-62. (canceled)
A compound of formula (I).
- wherein:
- Y is O or S;
- Z is O or S;
- R1 is (C1-C20)alkyl, phenyl, or (C3-C20)cycloalkyl;
- and R2 is (C1-C20)alkyl, phenyl, or (C3-C20)cycloalkyl;
- or R1 and R2 taken together with the atoms to which they are attached form a 5-15 membered heterocyclic ring that is optionally substituted with one or more groups independently selected from the group consisting of (C1-C6)alkyl, (C3-C6)cycloalkyl, and phenyl, wherein any phenyl or cycloalkyl of R1 and R2 is optionally substituted with one or more groups independently selected from the group consisting of (C1-C6)alkyl, (C3-C6)cycloalkyl, and phenyl, and
- X+ is a suitable cation.
64-68. (canceled)
Dependencies are inferred from the claim text.