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Inventor: Razdan; Raj Kumar
Address: Belmont, MA
No. of patents: 17
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 4116979 |
Process for the preparation of (-)-6a,10a-trans-6a,7,8,10a-tetrahydrodibenzo[b,d]-pyrans |
September 26, 1978 |
| (-)-6A,10A-Trans-1-hydroxy-3-n-pentyl-6,6,9-trimethyl-6a,7,8,10a-tetrahydro dibenzo[b,d]pyran and related pyrans are prepared by a one-step process from (+)-p-mentha-2,8-dien-1-ol and substituted resorcinols. The pyrans produced by the process of this invention have useful pharmacological |
| 4096265 |
Benzopyrano[3,4-d]pyridine-2-cyano, carboxamidoximes and carboximidates |
June 20, 1978 |
| Benzopyrano[3,4-d]pyridine-2-cyano, carboxamidoximes and carboximidates of the formula ##STR1## wherein R represents -C.ident.N, ##STR2## R.sub.1 is a lower alkyl, R.sub.2 is hydrogen or a lower alkyl and R.sub.3 is a straight or branched alkyl having 1 to 20 carbons, a cyclo |
| 4051152 |
Oxo C-ring benzopyrans |
September 27, 1977 |
| Benzopyrans of the formula ##STR1## wherein n represents 0 or 1, R is an alkyl group having 1 to 20 carbon atoms, an aryl-lower alkyl group or a cycloalkyl-lower alkyl group, R.sub.1 is hydrogen or ##STR2## wherein R.sub.4 is lower alkyl, phenyl, cycloalkyl-lower alkyl or |
| 4042694 |
Novel heterocyclic esters of benzopyranopyridines |
August 16, 1977 |
| Novel heterocyclic esters of benzopyranopyridines represented by the formula ##STR1## wherein R.sub.1 is hydrogen, lower alkyl, lower alkanoyl, cycloalkyl-lower alkyl, cycloalkyl-lower alkanoyl, lower alkenyl, lower alkynyl, halo-loweralkenyl, phenyl-lower alkyl, phenyl-lower alk |
| 4036857 |
Benzopyrans having an unsaturated side chain |
July 19, 1977 |
| 3-Formyl-6a,7,10,10a-tetrahydro-6,6,9-trimethyl-6H-dibenzo[b,d]pyran-1-ol, ethers and esters thereof having the formula ##STR1## wherein R is hydrogen, lower alkyl or lower alkanoyl and R.sub.6 is formyl or 1,3-dithiolan-2-yl but is 1,3-dithiolan-2-yl only when R is hydrogen, and |
| 4025516 |
Process for the preparation of (-)-6a,10a-trans-6a,7,8,10a-tetrahydrodibenzo[b,d]-pyrans |
May 24, 1977 |
| (-)-6A,10A-TRANS -1-Hydroxy-3-n-pentyl-6,6,9-trimethyl-6a,7,8,10a-tetrahydrodibenzo[b,d]pyr an and related pyrans are prepared by a one-step process from (+)-p-mentha-2,8-dien-1-ol and substituted resorcinols. The pyrans produced by the process of this invention have useful pharmacolo |
| 4020163 |
Use of heterocyclic esters of 5H-[1]benzopyrano [3,4-b]pyridines as analgesics |
April 26, 1977 |
| Heterocyclic esters of 1,4-ethano-1,2,3,4-tetrahydro-5H-[1]benzopyrano[3,4-b]pyridines and 1,4-ethano-1,2,3,4,13,14-hexahydro-5H-[1]benzopyrano[3,4-b]pyridines. The esters have the formulas ##STR1## wherein R.sub.2 is lower alkyl, R.sub.3 is an alkyl having one to twenty carb |
| 4007207 |
Alkyl substituted-4-oxo-cyclopenta benzopyrans |
February 8, 1977 |
| 1,2,3,4-Tetrahydrocyclopenta[c][1]benzopyrans of the formulae ##STR1## wherein R is a lower alkyl group having 1 to 5 carbons, R.sub.1 is hydrogen or a lower alkyl group having 1 to 5 carbons, R.sub.2 is a lower alkyl group and R.sub.3 is an alkyl group having 1 to 20 carbon atoms, a |
| 3992550 |
Pharmaceutical compositions containing alryl substituted cyclopenta benzopyrans |
November 16, 1976 |
| 1,2,3,4-Tetrahydrocyclopenta[c] [1]benzopyrans of the formulae ##SPC1##Wherein R is a lower alkyl group having 1 to 5 carbons, R.sub.1 is hydrogen or a lower alkyl group having 1 to 5 carbons, R.sub.2 is a lower alkyl group and R.sub.3 is an alkyl group having 1 to 20 carbon atoms, a |
| 3991194 |
Heterocyclic esters of benzopyranopyridines |
November 9, 1976 |
| Novel heterocyclic esters of benzopyranopyridines represented by the formula ##SPC1##Wherein R.sub.1 is hydrogen, lower alkyl, lower alkanoyl, cycloalkyl-lower alkyl, cycloalkyl-lower alkanoyl, lower alkenyl, lower alkynyl, halo-loweralkenyl, phenyl-lower alkyl, phenyl-lower alkenyl |
| 3987190 |
Method of treating hypertension with, and compositions useful therein containing, a 4H-thieno[2, |
October 19, 1976 |
| A method of reducing blood pressure in a hypertensive mammalian patient by administering 1,2-dihydro-4,4-dimethyl-9-hydroxy-7-(3-methyl-2-octyl)-4H-thieno[2,3-c][1 ]benzopyran or 1,2-dihydro-5,5-dimethyl-10-hydroxy-8-(3-methyl-2-octyl)-3H,5H-thiopyrano- 8 2,3-c][1]benzopyran. Pharm |
| 3972880 |
Morpholine containing esters of thienobenzopyrans and thiopyranobenzopyrans |
August 3, 1976 |
| Novel thienobenzopyran and thiopyranobenzopyran esters represented by the formula ##SPC1##Wherein n is 0 to 3 and m is 0 to 3 and m + n = 2 or 3, R.sub.1 is lower alkyl, R.sub.2 is alkyl or cycloalkyl-lower alkyl, R.sub.4 is hydrogen or lower alkyl, R.sub.5 is hydrogen or lower alkyl |
| 3960871 |
Esters of thienobenzopyrans and thiopyranobenzopyrans |
June 1, 1976 |
| Novel thienobenzopyran and thiopyranobenzopyran esters represented by the formula ##SPC1##Wherein n is 0 to 3 and m is 0 to 3 and m + n = 2 or 3, R.sub.1 is lower alkyl, R.sub.2 is alkyl or cycloalkyl-lower alkyl, R.sub.4 is hydrogen or lower alkyl, R.sub.5 is hydrogen or lower alkyl |
| 3951970 |
Resorcinol amine derivatives |
April 20, 1976 |
| Compounds of the formula ##SPC1##And acid addition salts thereof, wherein R represents an alkyl group having 1 to 20 carbon atoms, an arylalkyl group, or a cycloalkyl-lower alkyl group, R.sub.1 and R.sub.2 represent hydrogen or the same or different lower alkyl or lower alkanoyl grou |
| 3946111 |
Pharmaceutical compositions containing 1 or 2-mono and dialkyl substituted thienobenzopyrans and |
March 23, 1976 |
| 1,2-Dihydro-4H-thieno-[2,3-c][1]benzopyrans of the formulae ##SPC1##Wherein R is a lower alkyl group having 1 to 5 carbons, R.sub.1 is hydrogen or a lower alkyl group having 1 to 5 carbons, R.sub.2 is a lower alkyl group and R.sub.3 is an alkyl group having 1 to 20 carbon atoms, a ph |
| 3941782 |
Heterocyclic esters of benzopyrans |
March 2, 1976 |
| This invention relates to novel esters of benzopyrans represented by the formulae ##SPC1##Wherein R and R' are hydrogen or C.sub.1 -C.sub.6 alkyl and when alkyl are on the same or different carbons; R.sub.1 is C.sub.1 -C.sub.6 alkyl; R.sub.2 is C.sub.1 -C.sub.20 alkyl, lowercycloalky |
| 3934024 |
Method of producing analgesia and compositions useful therein |
January 20, 1976 |
| A method of relieving pain in a mammalian patient suffering therefrom by administering 1,2-dihydro-5,5-dimethyl-10-hydroxy-8-(3-methyl-2-octyl)-3H,5H-thiopyrano[ 2,3-c][1]benzopyran. |
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