Synthesis of Aminoisoquinolines and Related Compounds. IX. Synthesis of dl-O-Methylcaseadine
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The Mannich reaction of tetrahydroisoquinolines (IVa, b) with 36% formalin in acetic acid gave respectively protoberberines (Va, b) and each compounds were converted to tetramethoxyprotoberberines (Ic, d). Ic was identified by the infrared and nuclear magnetic resonance spectral comparisons with caseadine methyl ether derived from natural caseamine or caseadine. Hydrochloric acid catalyzed condensation of 7, 8-disubstituted tetrahydroisoquinoline (VIII) with 36% formalin gave the same compound (Ic).
収録刊行物
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- CHEMICAL & PHARMACEUTICAL BULLETIN
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CHEMICAL & PHARMACEUTICAL BULLETIN 18 (9), 1846-1849, 1970
公益社団法人 日本薬学会
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詳細情報 詳細情報について
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- CRID
- 1390282679148838272
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- NII論文ID
- 110003632516
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- NII書誌ID
- AA00602100
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- ISSN
- 13475223
- 00092363
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可