The present invention provides a vinylether compound of the following general formula (1), wherein R.sup.1 represents a monovalent hydrocarbon group having 1 to 15 carbon atoms, and the wavy line represents the E-form, the Z-form, or a mixture thereof. The present invention further provides a process for preparing 2,3,4,4-tetramethyl-1-cyclopentenecarbaldehyde of the following formula of the following formula (2), the process comprising subjecting the vinylether compound (1) to a hydrolysis reaction to form 2,3,4,4-tetramethyl-1-cyclopentenecarbaldehyde (2).

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The present invention provides a vinylether compound of the following general formula (1), wherein R.sup.1 represents a monovalent hydrocarbon group having 1 to 15 carbon atoms, and the wavy line represents the E-form, the Z-form, or a mixture thereof. The present invention further provides a process for preparing 2,3,4,4-tetramethyl-1-cyclopentenecarbaldehyde of the following formula of the following formula (2), the process comprising subjecting the vinylether compound (1) to a hydrolysis reaction to form 2,3,4,4-tetramethyl-1-cyclopentenecarbaldehyde (2).

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The present invention relates to an acetal compound of the following general formula (1) and an acetal compound of the following general formula (2). The present invention relates to processes for preparing the acetal compound (2), comprising subjecting the acetal compound (1) to a hydrogenation reaction to form the acetal compound (2). The present invention provides a process for preparing 2,3,4,4-tetramethylcyclopentanecarbaldehyde of the following formula (3), comprising subjecting the acetal compound (2) to a hydrolysis reaction to form 2,3,4,4-tetramethylcyclopentanecarbaldehyde (3).

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The present invention relates to an acetal compound of the following general formula (1) and an acetal compound of the following general formula (2). The present invention relates to processes for preparing the acetal compound (2), comprising subjecting the acetal compound (1) to a hydrogenation reaction to form the acetal compound (2). The present invention provides a process for preparing 2,3,4,4-tetramethylcyclopentanecarbaldehyde of the following formula (3), comprising subjecting the acetal compound (2) to a hydrolysis reaction to form 2,3,4,4-tetramethylcyclopentanecarbaldehyde (3).

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The present invention relates to an acetal compound of the following general formula (1) and an acetal compound of the following general formula (2). The present invention relates to processes for preparing the acetal compound (2), comprising subjecting the acetal compound (1) to a hydrogenation reaction to form the acetal compound (2). The present invention provides a process for preparing 2,3,4,4-tetramethylcyclopentanecarbaldehyde of the following formula (3), comprising subjecting the acetal compound (2) to a hydrolysis reaction to form 2,3,4,4-tetramethylcyclopentanecarbaldehyde (3). ##STR00001##

The present invention relates to an acetal compound of the following general formula (1) and an acetal compound of the following general formula (2). The present invention relates to processes for preparing the acetal compound (2), comprising subjecting the acetal compound (1) to a hydrogenation reaction to form the acetal compound (2). The present invention provides a process for preparing 2,3,4,4-tetramethylcyclopentanecarbaldehyde of the following formula (3), comprising subjecting the acetal compound (2) to a hydrolysis reaction to form 2,3,4,4-tetramethylcyclopentanecarbaldehyde (3). ##STR00001##

A monomer capable forming a polymer through ring-opening metathesis polymerization and capable of depolymerization thereafter through ring-closing metathesis, wherein the monomer comprises a cycloalkene having a fused ring attached thereto to form a cycloalkene-fused ring monomer, wherein the fused ring decreases the ring strain energy of the cycloalkene to a lower ring strain energy state of 5.3 kcal/mol or lower as compared to the same cycloalkene without the fused ring having a ring strain energy above 5.3 kcal/mol and wherein the cycloalkene-fused ring monomer is capable of isomerization into a higher ring strain energy state before polymerization and method of synthesizing the monomer. The monomer is further capable of forming chemically recyclable to monomers block copolymers.

A monomer capable forming a polymer through ring-opening metathesis polymerization and capable of depolymerization thereafter through ring-closing metathesis, wherein the monomer comprises a cycloalkene having a fused ring attached thereto to form a cycloalkene-fused ring monomer, wherein the fused ring decreases the ring strain energy of the cycloalkene to a lower ring strain energy state of 5.3 kcal/mol or lower as compared to the same cycloalkene without the fused ring having a ring strain energy above 5.3 kcal/mol and wherein the cycloalkene-fused ring monomer is capable of isomerization into a higher ring strain energy state before polymerization and method of synthesizing the monomer. The monomer is further capable of forming chemically recyclable to monomers block copolymers.

Decalin derivative compounds of formula (I) are provided, including processes for preparation thereof, and pharmaceutical compositions including the decalin derivative compounds. Methods are provided for treating blood related disorders, such as sickle cell anemia, in a subject in need thereof using a compound of formula (I).

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Decalin derivative compounds of formula (I) are provided, including processes for preparation thereof, and pharmaceutical compositions including the decalin derivative compounds. Methods are provided for treating blood related disorders, such as sickle cell anemia, in a subject in need thereof using a compound of formula (I).

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