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Volume 30, Issue 2
Displaying 51-55 of 55 articles from this issue
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Chikara Kaneko, Toshihiko Naito, Chiemi Miwa1982Volume 30Issue 2 Pages 752-753
Published: February 25, 1982
Released on J-STAGE: March 31, 2008
JOURNAL FREE ACCESSThe novel photochemical annulation of isoquinoline derivatives to form the 8-oxoprotoberberine derivatives is described. The key step of the reaction is an intramolecular photochemical arylation of 3-chloro-2-phenethyl-1-isoquinolone. The same arylation also proceeds intermolecularly, when 3-chloro-1-isoquinolones are irradiated in benzene.View full abstractDownload PDF (350K) -
Fumiyuki Kiuchi, Masaaki Shibuya, Ushio Sankawa1982Volume 30Issue 2 Pages 754-757
Published: February 25, 1982
Released on J-STAGE: March 31, 2008
JOURNAL FREE ACCESSIn addition to [6]-gingerol four new constituents were isolated as potent inhibitors of prostaglandin (PG) biosynthesis from ginger, the roots of Zingiber officinale Roscoe. Their structures were identified as [6]- and [10]-dehydrogingerdione (I and II) and [6]- and [10]-gingerdione (III and IV) by the interpretation of spectral data.View full abstractDownload PDF (422K) -
Isao Kitagawa, Masayuki Yoshikawa, Zhao Long Chen, Katsuya Kobayashi1982Volume 30Issue 2 Pages 758-761
Published: February 25, 1982
Released on J-STAGE: March 31, 2008
JOURNAL FREE ACCESSFour new lipo-alkaloids, named lipoaconitine (10), lipohypaconitine (11), lipomesaconitine (12), and lipodeoxyaconitine (13), have been isolated from Aconiti Tuber ("chuanwu"imported from Si Chuan, China) and their structures elucidated on the basis of chemical and physicochemical evidence.View full abstractDownload PDF (544K) -
Kazuhiko Ohta, Hisayoshi Okazaki, Toyokazu Kishi1982Volume 30Issue 2 Pages 762-765
Published: February 25, 1982
Released on J-STAGE: March 31, 2008
JOURNAL FREE ACCESSThe absolute configuration of P-1894B (vineomycin A1 (I)), a potent prolyl hydroxylase inhibitor, has been established as I from the absolute configuration of two sugar moieties (II, VI) obtained by chemical degradation of I.View full abstractDownload PDF (463K) -
Takuo Okuda, Takashi Yoshida, Mariko Ashida, Kazufumi Kazaki1982Volume 30Issue 2 Pages 766-769
Published: February 25, 1982
Released on J-STAGE: March 31, 2008
JOURNAL FREE ACCESSThree new ellagitannins, casuariin (5), stachyurin (6) and strictinin (7) have been isolated from Casuarina stricta, and their structures elucidated. Of these, 5 and 6 were found to be C-glucosidic tannins. All of the ellagitannins (1-7) isolated from C. stricta have been found also in Stachyurus praecox.View full abstractDownload PDF (408K)