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Kobayashi K, Tsunomori Y, Nogi T, Hiyoshi H, Umezu K. A Facile Synthesis of 1,4-Dihydro-2H-pyrimido[4,5-d][1,3]oxazin-2-one Derivatives from 4,6-Dichloro-2-(methylsulfanyl)pyrimidine. HETEROCYCLES 2018. [DOI: 10.3987/com-18-13879] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Kobayashi K, Ono R, Ishitobi K, Murayama I, Hiyoshi H, Umezu K. Synthesis of 6,7-Dihydro-5H-thiopyrano[2,3-d]pyrimidin-5-one Derivatives Starting with 4,6-Dichloro-2-(methylsulfanyl)pyrimidine. HETEROCYCLES 2018. [DOI: 10.3987/com-17-13840] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Kobayashi K, Nogi T, Tsunomori Y, Hiyoshi H, Umezu K. Synthesis of 8,9-Dihydropyrimido[4,5-e][1,4]oxazepin-7(5H)-ones by the Reaction of 1-(4-Chloropyrimidin-5-yl)alkan-1-ols with N-Alkylglycines. HETEROCYCLES 2017. [DOI: 10.3987/com-17-13795] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Kobayashi K, Nozawa I, Utsumi H, Ueyama T, Hiyoshi H, Umezu K. Synthesis of 7,8-Dihydropyrido[2,3-d]pyrimidine Derivatives from 4,6-Dichloro-2-(methylsulfanyl)pyrimidine. HETEROCYCLES 2017. [DOI: 10.3987/com-17-13720] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Kobayashi K, Ono R, Ishitobi K, Chikazawa Y, Hiyoshi H, Umezu K. Synthesis of 6,7-Dihydropyrido[2,3-d]pyrimidin-5(8H)-one Derivatives Based on the Reaction of 1-(4-Chloropyrimidin-5-yl)alk-2-en-1-one Derivatives with Primary Amines. HETEROCYCLES 2016. [DOI: 10.3987/com-15-13373] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Kobayashi K, Ono R, Yuba S, Hiyoshi H. Two-Step Synthesis of 5-Hydroxy-5,7-dihydro-6H-pyrrolo[2,3-d]pyrimidin-6-one Derivatives from 4-Chloro-6-methoxy-2-(methylsulfanyl)pyrimidine. HETEROCYCLES 2015. [DOI: 10.3987/com-15-13202] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Kobayashi K, Yuba S, Taniguchi A, Inouchi H, Hiyoshi H, Umezu K. Synthesis of 7-Amino-5,8-dihydropyrido[2,3-d]pyrimidine-6-carbonitrile Derivatives Based on the Reaction of 4-Chloro-5-lithio-6-methoxypyrimidines with 2-(Arylmethylidene)propanedinitriles. HETEROCYCLES 2014. [DOI: 10.3987/com-14-13091] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Kobayashi K, Kuroda M, Tanaka N, Yokoi Y, Kobayashi A, Hiyoshi H, Umezu K. A Simple Method for the Preparation of Pyrimido[4,5-d]pyrimidine-2,4(1H,3H)-dithione Derivatives. HETEROCYCLES 2014. [DOI: 10.3987/com-14-13038] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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