## Abstract The absolute configurations of the two algal pheromones multifidene **1** and viridiene **2** were determined as (+)‐(3__S__, 4__S__)‐3‐[(__Z__)‐1‐butenyl]‐4‐vinylcyclopentene and (+)‐(3__R__, 4__S__)‐3‐[(1__Z__)‐1, 3‐butadienyl]‐4‐vinylcyclopentene, respectively. The strategy involves
Synthesis of (±)-Desmarestene and (±)-Viridiene, the Two Sperm Releasing and Attracting Pheromones from the Brown Algae Desmarestia aculeata and Desmarestia viridis
✍ Scribed by Wilhelm Boland; Karin Jakoby; Lothar Jaenicke
- Publisher
- John Wiley and Sons
- Year
- 1982
- Tongue
- German
- Weight
- 537 KB
- Volume
- 65
- Category
- Article
- ISSN
- 0018-019X
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✦ Synopsis
Abstract
Desmarestene 1 6‐(1__Z__,3‐butadienyl)‐1,4‐cycloheptadiene and viridiene 3 cis‐3‐(1__Z__, 3‐butadienyl)‐4‐vinylcyclopentene are chemical messengers for male gametes of the brown algae Desmarestia aculeate and Desmarestia viridis. Total syntheses of 1, 3 and their stereoisomers 1a, 3a‐c are reported. Gas‐chromatographic comparison of synthetic 1 and 3 with the corresponding natural products has established their structural identity.
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Introduction. ~ During sexual reproduction, fertile female gametes of the marine brown alga Perithalia caudata release caudoxirene (1) as a specific chemical messenger. The signal is secreted together with two inactive by-products, namely viridiene (2, ca. 4%) and multifidene (3, ca. 8%) [l] [2] (Sc