## Abstract A conformation of a diketopiperazine, cyclo(L‐leucyl‐L‐tryptophyl), was determined by nmr and x‐ray analysis. The receptor for this bitter diketopiperazine neither recognizes chirality nor requires a strict conformation of the substrate. A good correlation was found between the bitterne
Structure-activity relationship of a bitter diketopiperazine revisited
✍ Scribed by Murray Goodman; Piero Andrea Temussi
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1985
- Tongue
- English
- Weight
- 241 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0006-3525
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✦ Synopsis
Bitter and sweet tastes are linked by a close relationship. It has long been known that seemingly minor modifications in the chemical constitution of many sweet molecules can lead to a bitter taste.' Striking examples are provided by several hydrophobic amino acids, whose R antipodes are sweet, where-
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## Abstract This work is part of a plan to investigate the structure–bitterness relationship in sesquiterpene lactones of dietary origin. The major guaianolides from artichoke (__Cynara scolimus__ L) were chosen for this study because of their exceedingly bitter taste and well‐proven safety at conc