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Synthesis and Absolute Configuration of Cryptostylines I, II, and III

✍ Scribed by A. Brossi; S. Teitel

Publisher
John Wiley and Sons
Year
1971
Tongue
German
Weight
561 KB
Volume
54
Category
Article
ISSN
0018-019X

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✦ Synopsis

pu-t o f project No. SR 2.120.0!, ctf the Schweizerischer Nak~oitalfonds. Financial .4-GEIGY S.A., Easel, is gratefully aclinowlctlgcd. Finally we wish t o thank S A A ~D O Z AG fur t h e gift of computer time.

:Ippendix. Table 4 lists t h c analysis of the vilrational fine structure ol ba~icls &, r:~: and fg. 'The nunibcring of the spacings refers to Fig. 3. The spacings have bccn measured in arbitrary, units, which have been converted into the vducs in cV of Table 4 by multiplication with a scale factor.

1 he rcsults of thc least-squares analysis :ti-c givcn, for convcnicncc, in cn-l. The Studcnt-tvalucs a]-c those for I' 2 0.1 t.c. for 90 pcrccnt coniitlcncc limit.

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## Abstract For Abstract see ChemInform Abstract in Full Text.

Synthesis and absolute configuration of
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efficient synthesis of chettaphanin I and II has been achieved from ent-halimic acid. The absolute configuration of the natural products was established by nOe experiment and by X-ray analysis of chettaphanin II.