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Volumn 121, Issue 10, 1999, Pages 2056-2070

Synthesis of the North 1 unit of the cephalostatin family from hecogenin acetate

Author keywords

[No Author keywords available]

Indexed keywords

ACETIC ACID DERIVATIVE; ANTINEOPLASTIC AGENT; CEPHALOSTATIN; UNCLASSIFIED DRUG;

EID: 0033577299     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja9817139     Document Type: Article
Times cited : (58)

References (122)
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    • For an improved procedure for oxidation of iodides to iodoso intermediates with dimethyldioxirane see: Mahadevan, A.; Fuchs, P. L. J. Am. Chem. Soc. 1995, 117, 3272.
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    • note
    • It seems possible that a bidentate ligating effect of the β-hydroxy ketone is responsible for enhancement of the Wolff reaction or its operational equivalent.
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    • note
    • f value of compound 52 is almost the same as that of diazophospnonate 51 which was used in excess, so the mixture was used directly in the Wadsworth-Emmons reaction.
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    • X-ray structural information relating to compounds 57, 72, and 82 can be obtained from the Cambridge Crystallographic Data Centre.
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    • note
    • A study of factors influencing the course of the chromium(II) mediated reduction is in progress and will be the subject of a future report.


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