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Ohigashi A, Temmaru K, Hashimoto N. New Synthetic Approach to 4-(3-Aminopropyl)-5-amino-1-methylpyrazole Starting from 3-Cyanopyridine. Org Process Res Dev 2005. [DOI: 10.1021/op0501996] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Atsushi Ohigashi
- Process Chemistry Labs, Astellas Pharma Inc., 2-1-6, Kashima, Yodogawa-ku, Osaka 532-8514, Japan, and Functional Food Ingredients Division, Kaneka Corporation, 3-2-4, Nakanoshima, Kita-ku, Osaka 530-8288, Japan
| | - Kiyoshi Temmaru
- Process Chemistry Labs, Astellas Pharma Inc., 2-1-6, Kashima, Yodogawa-ku, Osaka 532-8514, Japan, and Functional Food Ingredients Division, Kaneka Corporation, 3-2-4, Nakanoshima, Kita-ku, Osaka 530-8288, Japan
| | - Norio Hashimoto
- Process Chemistry Labs, Astellas Pharma Inc., 2-1-6, Kashima, Yodogawa-ku, Osaka 532-8514, Japan, and Functional Food Ingredients Division, Kaneka Corporation, 3-2-4, Nakanoshima, Kita-ku, Osaka 530-8288, Japan
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Emil Hardegger 1913–1978. Adv Carbohydr Chem Biochem 1981. [DOI: 10.1016/s0065-2318(08)60308-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Abstract
The synthesis of 1-methyl-3,4-dihydro-β-carboline (harmalan) and of two of its derivatives by dehydration of the corresponding 1-hydroxymethyl-1,2,3,4-tetrahydro-β-carbolines is described. Harmalan was also obtained by oxidative decarboxylation of 1-methyl-1,2,3,4-tetrahydro-β-carboline-1-carboxylic acid.
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