الفهرس 
Introduction
Chapter I: Extraction, Fractionation and Isolation of the Constituents from the powdered Hyrtios spOnly 14 pages are availabe for public view
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Abstract
The marine sponge Hyrtios sp. was collected from the Egyptian coasts of the Red Sea at Sharm el-Sheikh using scuba diving at a depth of 30 ft by Prof. Dr. Safwat Ahmed, Suez Canal University. The collected material was immediately frozen and kept at -20 °C until investigation. The sponge was identified by Dr. R. van Soest (Institute of Systematic Population Biology, Amsterdam University, the Netherlands). A voucher specimen is kept in the collections of the Zoological Museum of the University of Amsterdam, under registration number ZMAPOR19762. Another voucher sample was deposited under the numbers SAA-61 at the Pharmacognosy Department, Faculty of Pharmacy, Suez Canal University, Egypt.
The fresh sponge material (1 kg) was frozen on site immediately after collection. The sponge material was chopped while frozen into small pieces and extracted with MeOH / dichloromethane (1:1) (4 x 3 L) at room temperature. The combined crude extract was concentrated under reduced pressure to give a black viscous crude extract (46 g).