Krivoruchko. -Chem. Abst. 1\_1. 50409 (1969). 9) The C-H long range couplings observed between C-4a (681.6) and 6-H (66.89) and between C-3 (675.3) and 3-CH3 (61.24) indicates that the remaining quaternary oxycarbon (680.2) is assignable to C-12b.
Structures of deacetyl glykenins-a, b, and c, glycosidic antibiotics from basidiomycetes sp.
β Scribed by Fumiko Nishida; Yuji Mori; Sayuri Isobe; Takeyuki Furuse; Makoto Suzuki; Vithaya Meevootisom; Timothy W. Flegel; Yodhathai Thebtaranonth
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- French
- Weight
- 290 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0040-4039
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Following the characterization of callipeltoside A (1), the first member of a novel class of marine glycoside macrolides, two more bioactive constituents, callipeltoside B (2) and C(3), were isolated from Callipelta sp. in very low amounts. The structures, assigned on the basis of spectral analysis,
The structures of carbapenems OA-6129A, B,, B2 and C were determlned by spectroscopy and chemical transformation In the course of our extensive work on carbapenems, B2($) and C($,)') new compounds OA-6129A(l), Bl($), have been isolated as sodium salts from Streptmyces sp. OA-6129 These compounds sho