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Molbank, Volume 2003, Issue 1 (March 2003)

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Open AccessShort Note 8-Acetyl-labdanolic Acid (-)-(3S)-5-((1R,2R,4aS,8aS)-2-Acetoxy-2,5,5,8a-tetramethyldecahydro-1-naphthalenyl)-3-methylpentanoic Acid
Molbank 2003, 2003(1), M298; doi:10.3390/M298
Received: 12 December 2001 / Accepted: 19 September 2002 / Published: 8 March 2003
PDF Full-text (127 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
Acetic anhydride (0.09 mL, 0.98 mmol) and N,N-dimethylaminopyridine (2 mg, 0.02 mmol) were added to a stirred solution of the alcohol 1 (75 mg, 0.23 mmol) in freshly distilled triethylamine (1 mL) [1].[...] Full article
Open AccessShort Note 8-Formyl-labdanolic Acid (-)-(3S)-5-((1R,2R,4aS,8aS)-2-Formyloxy-2,5,5,8a-tetramethyldecahydro-1-naphthalenyl)-3-methylpentanoic Acid
Molbank 2003, 2003(1), M299; doi:10.3390/M299
Received: 12 December 2001 / Accepted: 19 September 2002 / Published: 8 March 2003
PDF Full-text (99 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
A sample (0.85 mL, 6.5 mmol) of formic acid-acetic anhydride mixture (FAM), prepared from Ac2O and formic acid as described in the literature [1], was added to the alcohol 1 [2](255 mg, 0.79 mmol) at 10 ºC.[...] Full article
Open AccessShort Note Methyl 8-Acetyl-labdanolate (-)-(3S)-5-((1R,2R,4aS,8aS)-2-Acetoxy-2,5,5,8a-tetramethyldecahydro-1-naphthalenyl)-3- methylpentanoic Acid Methyl Ester
Molbank 2003, 2003(1), M300; doi:10.3390/M300
Received: 12 December 2001 / Accepted: 19 September 2002 / Published: 8 March 2003
PDF Full-text (96 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
Acetic anhydride (0.53 mL, 5.61 mmol) and N,N-dimethylaminopyridine (17 mg, 0.14 mmol) were added to a stirred solution of the alcohol 1 (442 mg, 1.31 mmol) in freshly distilled triethylamine (1.3 mL) [1].[...] Full article
Open AccessShort Note Methyl 8a-Formyloxy-labd-13E-en-15-oate [(-)-(2E)-5-((1R,2R,4aS,8aS)-2-Formyloxy-2,5,5,8a-tetramethyldecahydro-1-naphthalenyl)-3- methyl-2-pentenoic acid methyl ester]
Molbank 2003, 2003(1), M301; doi:10.3390/M301
Received: 12 December 2001 / Accepted: 19 September 2002 / Published: 8 March 2003
PDF Full-text (97 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
A sample (0.10 mL, 1.27 mmol) of formic acid-acetic anhydride mixture (FAM), prepared from Ac2O and formic acid as described in the literature [1], was added to the alcohol 1 [2] (83 mg, 0.25 mmol) at 10 ºC.[...] Full article
Open AccessShort Note Methyl 8a-Formyloxy-labd-13Z-en-15-oate [(-)-(2Z)-5-((1R,2R,4aS,8aS)-2-Formyloxy-2,5,5,8a-tetramethyldecahydro-1-naphthalenyl)-3-methyl- 2-pentenoic Acid Methyl Ester]
Molbank 2003, 2003(1), M302; doi:10.3390/M302
Received: 12 December 2001 / Accepted: 19 September 2002 / Published: 8 March 2003
PDF Full-text (98 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
A sample (0.03 mL, 0.45 mmol) of formic acid-acetic anhydride mixture (FAM), prepared from Ac2O and formic acid as described in the literature [1], was added to the alcohol 1 [2] (29 mg, 0.09 mmol) at 10 ºC.[...] Full article
Open AccessShort Note 8a-Formyloxy-14,15-dinorlabdan-13-one [(-)-4-((1R,2R,4aS,8aS)-2-Formyloxy-2,5,5,8a-tetramethyldecahydro-1-naphthalenyl)-2-butanone]
Molbank 2003, 2003(1), M303; doi:10.3390/M303
Received: 12 December 2001 / Accepted: 19 September 2002 / Published: 8 March 2003
PDF Full-text (97 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
To a stirred solution of a mixture of E/Z isomers 1 (81 mg, 0.22 mmol, 45:55 ratio) in acetone (5 mL) was added a mixture of KMnO4 (122 mg, 0.77 mmol) and anhydrous MgSO4 (120 mg) at 10 ºC [1].[...] Full article
Open AccessShort Note 8a,13-Epoxy-14,15-dinorlabd-12-ene (Sclareol Oxide) [(+)-(4aR,6aS,10aS,10bR)-3,4a,7,7,10a-Pentamethyl-4a,5,6,6a,7,8,9,10,10a,10b-decahydro-1H-benzo[f]chromene]
Molbank 2003, 2003(1), M304; doi:10.3390/M304
Received: 12 December 2001 / Accepted: 19 September 2002 / Published: 8 March 2003
PDF Full-text (98 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
To a stirred solution of a mixture of E/Z isomers 1 (174 mg, 0.52 mmol, 45:55 ratio) in acetone (8 mL) was added a mixture of KMnO4 (260 mg, 1.64 mmol) and anhydrous MgSO4 (230 mg) at 10 ºC [1].[...] Full article
Open AccessShort Note 4-p-Tolylazo-5-trifluoromethyl-2,4-dihydropyrazol-3-one
Molbank 2003, 2003(1), M305; doi:10.3390/M305
Received: 16 June 2002 / Accepted: 30 September 2002 / Published: 11 March 2003
Cited by 2 | PDF Full-text (118 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
To a cold solution of 5-trifluoromethyl-2,4-dihydropyrazol-3-one [1,2] (0.76 g, 5 mmol) in ethanol (25 ml) containing sodium acetate (0.82 g, 10 mol), p-tolyldiazonium chloride [ca. 5 mmol; prepared by adding a solution of sodium nitrite (5 mmol / 2 ml H2O)
[...] Read more.
To a cold solution of 5-trifluoromethyl-2,4-dihydropyrazol-3-one [1,2] (0.76 g, 5 mmol) in ethanol (25 ml) containing sodium acetate (0.82 g, 10 mol), p-tolyldiazonium chloride [ca. 5 mmol; prepared by adding a solution of sodium nitrite (5 mmol / 2 ml H2O) to an ice cold solution of p-toluidine in 2 ml conc. HCl] was added dropwise with stirring at 0-5°C.[...] Full article
Open AccessShort Note 2-(2`,3`,5`-Tri-O-acetyl-b-D-ribofuranosyl)-4-(p-tolylazo)-5-trifluoromethyl-2,4-dihydropyrazol-3-one
Molbank 2003, 2003(1), M306; doi:10.3390/M306
Received: 16 June 2002 / Accepted: 30 September 2002 / Published: 11 March 2003
Cited by 1 | PDF Full-text (160 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
To a solution of 4-(4-methylphenylazo)-5-trifluoromethyl-2,4-dihydropyrazol-3-one (1) [1] (0.81g, 3 mmol) in hexamethyldisilazine (HMDS) (25 ml) was added few crystals of anhydrous ammonium sulfate [2].[...] Full article
Open AccessShort Note 2-(b-D-Ribofuranosyl)-4-(p-tolylazo)-5-trifluoromethyl-2,4-dihydropyrazol-3-one
Molbank 2003, 2003(1), M307; doi:10.3390/M307
Received: 16 June 2002 / Accepted: 30 September 2002 / Published: 11 March 2003
Cited by 1 | PDF Full-text (138 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
The desired compound 2 was obtained by complete deprotection of the acetylated nucleoside 1 [1] using triethylamine [2]. [...] Full article
Open AccessShort Note 4,8,11,15-Tetramethyl-1,3,8,11,16,17-hexaazatricyclo[11.2.1.13,6]heptadeca-4,6(17), 13(16), 14-tetraene
Molbank 2003, 2003(1), M308; doi:10.3390/M308
Received: 16 June 2002 / Accepted: 30 September 2002 / Published: 11 March 2003
PDF Full-text (91 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
A suspension of sodium carbonate (12 g, 120 mmol) in acetonitrile (250 mL) was refluxed under magnetic stirring, then a solution of bis-(3-chloromethyl-5-methylpyrazolyl)methane (1) (2 g, 7 mmol) [1, 2] and diamine 2 (0.64 g , 7 mmol) in acetonitrile (50
[...] Read more.
A suspension of sodium carbonate (12 g, 120 mmol) in acetonitrile (250 mL) was refluxed under magnetic stirring, then a solution of bis-(3-chloromethyl-5-methylpyrazolyl)methane (1) (2 g, 7 mmol) [1, 2] and diamine 2 (0.64 g , 7 mmol) in acetonitrile (50 mL) was added dropwise.[...] Full article
Open AccessShort Note 8,12-Diethyl-4,16-dimethyl-1,3,8,12,17,18-hexaazatricyclo[12.2.1.13,6]octadeca-4,6(18), 14(17), 15-tetraene
Molbank 2003, 2003(1), M309; doi:10.3390/M309
Received: 16 June 2002 / Accepted: 30 September 2002 / Published: 11 March 2003
PDF Full-text (91 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
A suspension of sodium carbonate (12 g, 120 mmol) in acetonitrile (250 mL) was refluxed under magnetic stirring, then a solution of bis-(3-chloromethyl-5-methylpyrazolyl)methane (1) (2 g, 7 mmol) [1, 2] and diamine 2 (0.95 g , 7 mmol) in acetonitrile (50
[...] Read more.
A suspension of sodium carbonate (12 g, 120 mmol) in acetonitrile (250 mL) was refluxed under magnetic stirring, then a solution of bis-(3-chloromethyl-5-methylpyrazolyl)methane (1) (2 g, 7 mmol) [1, 2] and diamine 2 (0.95 g , 7 mmol) in acetonitrile (50 mL) was added dropwise.[...] Full article
Open AccessShort Note 4,8,12,16-Tetramethyl-1,3,8,12,17,18-hexaazatricyclo[12.2.1.13,6]octadeca-4,6(18), 14(17), 15-tetraene
Molbank 2003, 2003(1), M310; doi:10.3390/M310
Received: 16 June 2002 / Accepted: 30 September 2002 / Published: 11 March 2003
PDF Full-text (91 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
A suspension of sodium carbonate (12 g, 120 mmol) in acetonitrile (250 mL) was refluxed under magnetic stirring, then a solution of bis-(3-chloromethyl-5-methylpyrazolyl)methane (1) (2 g, 7 mmol) [1, 2] and diamine 2 (0.74 g , 7 mmol) in acetonitrile (50
[...] Read more.
A suspension of sodium carbonate (12 g, 120 mmol) in acetonitrile (250 mL) was refluxed under magnetic stirring, then a solution of bis-(3-chloromethyl-5-methylpyrazolyl)methane (1) (2 g, 7 mmol) [1, 2] and diamine 2 (0.74 g , 7 mmol) in acetonitrile (50 mL) was added dropwise.[...] Full article
Open AccessShort Note 8,12-Dibenzyl-4,16-dimethyl-1,3,8,12,17,18-hexaazatricyclo[12.2.1.13,6]octadeca-4,6(18), 14(17), 15-tetraene
Molbank 2003, 2003(1), M311; doi:10.3390/M311
Received: 16 June 2002 / Accepted: 30 September 2002 / Published: 11 March 2003
PDF Full-text (92 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
A suspension of sodium carbonate (12 g, 120 mmol) in acetonitrile (250 mL) was refluxed under magnetic stirring, then a solution of bis-(3-chloromethyl-5-methylpyrazolyl)methane (1) (2 g, 7 mmol) [1, 2] and diamine 2 (1.68 g , 7 mmol) in acetonitrile (50
[...] Read more.
A suspension of sodium carbonate (12 g, 120 mmol) in acetonitrile (250 mL) was refluxed under magnetic stirring, then a solution of bis-(3-chloromethyl-5-methylpyrazolyl)methane (1) (2 g, 7 mmol) [1, 2] and diamine 2 (1.68 g , 7 mmol) in acetonitrile (50 mL) was added dropwise.[...] Full article
Open AccessShort Note 10,14-Dibenzyl-6,18-dimethyl-1,5,10,14,19,20-hexaazatricyclo[14.2.1.15,8]icosa-6,8(20), 16(19), 17-tetraene
Molbank 2003, 2003(1), M312; doi:10.3390/M312
Received: 16 June 2002 / Accepted: 30 September 2002 / Published: 11 March 2003
PDF Full-text (94 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
A suspension of sodium carbonate (12 g, 120 mmol) in acetonitrile (250 mL) was refluxed under magnetic stirring, then a solution of bis-(3-chloromethyl-5-methylpyrazolyl)propane (1) (2.03 g, 7 mmol) [1-3] and diamine 2 (1.86 g , 7 mmol) in acetonitrile (50 mL)
[...] Read more.
A suspension of sodium carbonate (12 g, 120 mmol) in acetonitrile (250 mL) was refluxed under magnetic stirring, then a solution of bis-(3-chloromethyl-5-methylpyrazolyl)propane (1) (2.03 g, 7 mmol) [1-3] and diamine 2 (1.86 g , 7 mmol) in acetonitrile (50 mL) was added dropwise.[...] Full article
Open AccessShort Note 10,14-(Cyanomethyl)-6,18-dimethyl-1,5,9,14,19,20-hexaazatricyclo[14.2.1.15,8]icosa-6,8(20), 16(19), 17-tetraene
Molbank 2003, 2003(1), M313; doi:10.3390/M313
Received: 16 June 2002 / Accepted: 30 September 2002 / Published: 11 March 2003
PDF Full-text (93 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
A suspension of sodium carbonate (12 g, 120 mmol) in acetonitrile (250 mL) was refluxed under magnetic stirring, then a solution of bis-(3-chloromethyl-5-methylpyrazolyl)propane (1) (2.03 g, 7 mmol) [1-3] and diamine 2 (1.9 g , 7 mmol) in acetonitrile (50 mL)
[...] Read more.
A suspension of sodium carbonate (12 g, 120 mmol) in acetonitrile (250 mL) was refluxed under magnetic stirring, then a solution of bis-(3-chloromethyl-5-methylpyrazolyl)propane (1) (2.03 g, 7 mmol) [1-3] and diamine 2 (1.9 g , 7 mmol) in acetonitrile (50 mL) was added dropwise.[...] Full article
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