Abstract:
:Four new diterpenes, 3-oxosaprorthoquinone (1), 3-oxomicrostegiol (2), 3-oxoisotaxodione (3), and taiwaninal (4), together with two known compounds, 3-oxosapriparaquinone (5) and 6-dehydrohinokiol (6), were isolated from the roots of Taiwania cryptomerioides. The structures of 1-4 were principle elucidated based on spectral evidence.
journal_name
Chem Pharm Bull (Tokyo)journal_title
Chemical & pharmaceutical bulletinauthors
Chyu CF,Lin HC,Kuo YHdoi
10.1248/cpb.53.11subject
Has Abstractpub_date
2005-01-01 00:00:00pages
11-4issue
1eissn
0009-2363issn
1347-5223pii
JST.JSTAGE/cpb/53.11journal_volume
53pub_type
杂志文章abstract::An efficient stereocontrolled total synthesis of (+)-biotin (1) has been achieved via the intermediacy of Roche's lactone 5 starting from cis-1,3-dibenzyl-2-imidazole-4,5-dicarboxylic acid (2). The bifunctional cinchona alkaloid-derived squaramide-promoted enantioselective alcoholysis was utilizing as a tool for the c...
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journal_title:Chemical & pharmaceutical bulletin
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journal_title:Chemical & pharmaceutical bulletin
pub_type: 杂志文章
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journal_title:Chemical & pharmaceutical bulletin
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更新日期:2008-03-01 00:00:00
abstract::Water-soluble porphyrins containing four platinum(II) complexes per molecule, [5alpha,10beta,15alpha,20beta-tetrakis(2-trans-(alpha,beta,alpha,beta-trans-Pt) and cis-(alpha,beta,alpha,beta-cis-Pt) [PtCl(NH(3))(2)]N-2-aminophenylporphyrin)], were synthesized and characterized. The binding of synthetic nucleotide polyme...
journal_title:Chemical & pharmaceutical bulletin
pub_type: 杂志文章
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journal_title:Chemical & pharmaceutical bulletin
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journal_title:Chemical & pharmaceutical bulletin
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journal_title:Chemical & pharmaceutical bulletin
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journal_title:Chemical & pharmaceutical bulletin
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pub_type: 杂志文章
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journal_title:Chemical & pharmaceutical bulletin
pub_type: 杂志文章
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abstract::A new resveratrol dimer and a new C-glucosyl resveratrol were isolated from stem wood of Hopea utilis along with nine stilbenoid derivatives comprising bergenin and (+)-lyoniresinol. The structures have been elucidated on the basis of the spectroscopic evidence. ...
journal_title:Chemical & pharmaceutical bulletin
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更新日期:2001-06-01 00:00:00