## Abstract The origin of the carbon skeleton of verrucarin E **(1)** from acetate as precursor is confirmed. Incorporation studies with [1,2โ^13^C]โacetate have demonstrated that two acetoacetate units couple together as shown in pattern **A** __(Scheme 2)__ and not as in **B**. Analysis of the de
Studies on the biosynthesis of terrecyclic acid A II confirmation of the cyclization mechanism and hydrogen shifts using [2-2H3]acetate and [213C2H3]acetate
โ Scribed by Akira Hirota; Masahira Nakagawa; Heiichi Sakai; Akira Isogai; Kazuo Furihata; Haruo Seto
- Publisher
- Elsevier Science
- Year
- 1985
- Tongue
- French
- Weight
- 237 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0040-4039
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โฆ Synopsis
Feeding experiments with t2-3H Iacetate and [2-13C2H in Aspergillus terreus Thorn No.14 indicatsd that the hydrogen a
Table 1 Alpha-and beta-deuterium substituted shifts in 13 C-NMR spectra of III. (pprn\ 111 from feeding experiment with III from feeding experiment with Zarbon [2-3x31acetate I2-'3c2li31acetate CL I? (I z-1
๐ SIMILAR VOLUMES
## Abstract In this paper we report that the title compound (3) reacts with excess __N,N__โdimethylformamide (DMF) containing two equivalents of acetic acid to afford 6โaminoโ1,2,4โtriazolo[3,4โ__f__][1,2,4]triazinโ8(7__H__)โone (**1**). When 3โaminoโ2โbenzylโ6โhydrazinoโ1,2,4โtriazinโ5(2__H__)โone
## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a โFull Textโ option. The original article is trackable v
The hydroesterification of cyclohexene is catalyzed by a preformed Pd(PPh 3 ) 2 (TsO) 2 complex I in methanol as solvent. The effect of PPh 3 , TsOH, and water on the TOF has been evaluated. The system I/PPh 3 /TsOH = 1/6/8, in the presence of 800 ppm of H 2 O, at 373 K and under 2.0 MPa of CO leads